- SYNTOR X 9000 CABLES
		- Radio Trouble Shooting Tip
		- Syntor X 9000 Radio Cable Pin Out
		- Systems 9000 Control Head to Radio Pin Out
		- Systems 9000 Control Head to Microphone Pin Out
		- Systems 9000 Control Head to Vehicle Interface Port (VIP) Pin Out
		- Systems 9000 Direct Entry Keyboard (DEK) Cable Pin Out
		- Systems 9000 Direct Entry Keyboard (DEK) VIP II Pin Out
		- Syntor X 9000 Radio Securenet Physical Security Housing Cable Pin Out
		- Systems 9000 Control Head Securenet Physical Security Housing Cable Pin Outs
		- Syntor X 9000 HKN4246A / HKN4304A Siren/VRS T-Cable Pin Outs
		- Syntor X 9000 HKN4295A External Options Housing/VRS T-Cable Pin Out
		- Syntor X 9000 YKN4214A Dual Radio T-Cable Pin Out
	- Syntor X 9000 Home
	- HOME

Radio trouble shooting tip:

Sometimes a radio can have intermittent operation and/or generally flakey problems that can be attributed to dirty, loose or oxidized connections on the A or B power terminals (these are connected to the large gauge red and black power wires). Checking and if needed, cleaning or repairing these connections can fix lots of different problems with these radios. Motorola started covering the back side of these 2 connections (inside the connector housing) with a glob of epoxy on later production cables (it also gets on the connector body and adjacent wires). Actually the epoxy makes repair/replacement just about impossible, but they should not have problems very often, if ever. I would not recommend using any epoxy on used cables because of the possibility of old pre-existing partially oxidized connections that you would never be able to repair again if they go bad. This tip applies to any other accessories (i.e. Systems 9000 siren/PA, Systems 9000 vehicle repeater, Systems 9000 External Options Housing, etc.) that use these connectors.

Syntor X 9000 Radio Cable Pin Out:

Below is a pin number locater for the radio cable connector. The view is looking towards the pins that plug into the radio's J1 connector with the cable on the left side. Motorola's contact removal tool or a home made equivalent can be used to remove and move the number 1 through 37 contact pins in these connectors. To open the connector housing the neoprene gasket corners must be pulled up to gain access to the 4 phillips head screws. Removing these screws allows the housing on the back of the connector to be removed. The C clip on the center screw jack must also be removed. It is difficult, actually impossible sometimes, to peel back the neoprene without damaging it. I have seen connectors where just the part of the neoprene gasket over the 4 screw heads was removed. The gasket may need to be replaced if you want to maintain the original connector sealing.

• Above is a front view of the radio cable connector.

• Above is a front view of the cable's control head connector with pin numbers. Each of the three horizontal rows of pins is numbered sequentially from right to left. The cable is on the left side of the connector.

Syntor X 9000 Cable Pin Out (Negative Ground)
Radio J1 Pin #	Wire Color	Control Head Pin #	Radio Pin Description
A	Red		A+
B	Black		A- (jumpered to pins 8 and 10)
1			PTT (Input)
2	BLK/BRN	45	Detected Audio (Output)
3	BLK/GRN	46	Option Tx Audio (Input)
4	BLK/ORG	26	Reset (Input/Output)
5	BLK/RED	33	Busy (Input/Output)
6	YEL	48	Switched B+ (Input)
7			Switched B+ (Output)
8			B- (jumpered to pins 10 and B)
9			Filtered Audio (Output)
10			Chassis (jumpered to pins 8 and B)
11	Shield		Detected Audio Shield
12			A+ (later versions only - see below)
13	RED	29	Spare 2
14	Shield	13	Mic. Low
15			Filtered Audio Shield
16	red*	port pin 1*	Write Enable (Input)
17	WHT	17	Bus + (RS-422 Input/Output)
18	Shield		Option Tx Audio Shield
19	Shield		Bus - Shield
20			B-
21			Channel Activity (Output)
22	GRN	11	Speaker Audio Low (Output)
23	yel*	port pin 2*	KEY (Input)
24	BRN	28	Spare 1
25	BLK	50	Bus - (RS-422 Input/Output)
26	VIO	16	Analog Ground
27	BLK/YEL	12	Mic. Hi (Input)
28
29	wht*	port pin 5*	KID
30
31	blk*	port pin 4*	B-
32	BLU	49	B-
33			Option Rx Audio (Input)
34	blk*	port gnd.*	Option Rx Shield
35
36
37	ORG	44	Speaker Audio Hi (Output)

• This cable goes from the Syntor X 9000 radio and connects to the Systems 9000 Control Head. This includes HKN4240A, HKN4241A, HKN4242A and HKN4256A cables.
• The grayed out pins are not used on these radio cables. The keyloader port pins are highlighted in green and are are only included on the HKN4256A cable.
• Pin 12 Note: Connector J1 Pin 12 was not connected in early versions of the Personality Board. The HKN4295A and HKN4304A cables require this connection to operate (i.e. it must be jumpered on early versions of the Personality Board). This problem can affect the SirenPA, External Options Housing and Vehicle Repeater System (VRS).
• * - HKN4256A Securenet cable with keyloader port. The keyloader port is located on a special J1 connector front housing. The keyloader port pins are highlighted in green.

Systems 9000 Control Head to Radio Pin Out:

• Above is a front view of the cable's control head connector with pin numbers. Each of the three horizontal rows of pins is numbered sequentially from right to left. The cable is on the left side of the connector.

• Above is a front view of the cable's radio connector with pin numbers. The cable is on the left side of the connector.

Systems 9000 Control Head to Radio Pin Out
Control Head Pin #	Radio J1 Pin #	Description
10		Speaker Audio Low (Output) (BLK/GRN Wire)
11	22	Speaker Audio Low (Input)
12	27	Mic. Hi (Output)
13	14	Mic. Low (Output)
14		BATT- (shorted to Pin 31)
15		Ignition + (Input) (Orange wire)
16	26	ANALOG GROUND
17	17	Bus + (RS-422 Input/Output)
26	4	Reset (Input/Output)
27		(N.C.)
28	24	Spare 1
29	13	Spare 2
30		BATT+ (shorted to Pin 47)
31		BATT- (shorted to Pin 14)
32		Ignition -
33	5	Busy (Input/Output)
43		Speaker Audio Hi (Output) (BLK/ORG Wire)
44	37	Speaker Audio Hi (Input)
45	2	Detected Audio (Input) (N.C.)
46	3	Option Tx Audio (Output) (N.C.)
47		BATT+ (Input) (Green Wire) (shorted to Pin 30)
48	6	Switched B+ (Output)
49	32	DIGITAL GROUND
50	25	Bus - (RS-422 Input/Output)

• These are the same cables as above, it is just being shown from the control head side of the cable.
• N.C. means there is No Connection inside the control head.
• The grayed out Control Head Pin #s are not used on the negative ground cable. Some Radio J1 pin #s are grayed out because the control head pins are connected to external wires that do not go back to the radio.
• The yellow highlighted pins with a wire indicated in the description do not go to the radio. These wires are only attached to the control head connector.
• The input and output notes in parenthesis are with respect to the control head.
• For negative ground cables, the green wire (BATT+) and orange wire (IGN+) that are attached to the control head side of the radio cable need to be fused and attached to the battery + voltage. The green wire provides power to the control head. The orange wire is used in conjunction with the RSS programming. If the orange wire is attached to an automotive circuit that is only on when the ignition key is on, the radio can be programmed to only allow transmitting when the ignition key is on.
• Some radios and control heads are modified so the control head draws power from the radio instead of the green control head connector wire. Usually a Spare line is used to carry power to the radio. The modification to the control head can be as subtle as a solder blob between pins 29 (Spare 2) and 30 (BATT+). Personally, I would not do this modification unless I could figure out how to fuse the Spare line inside the radio. However, you may encounter this modification in used radios and control heads.
• The HCN1063 and HCN1073 control heads have internal jumpers that can reconfigure some of the control head pins such that the descriptions above would no longer be correct for those control head pins. Other models of control heads should be checked for physical modifications (i.e. cut PC traces, wire jumpers and extra components soldered point to point on the PC board) that can have the same effect on the description. Expect to find modifications on control heads with a kit number below the model number.
• Check out the parts page for the conector and pins that mate with the cable's speaker connector.
• If the retainer clips are broken off of the control head connector, use REX-1070B as a replacement.

Systems 9000 Control Head to Microphone Pin Out:

• Above is a front view of the microphone control head connector with pin numbers. The microphone cord is hanging down below the connector.

Systems 9000 Control Head Microphone Pin Out
Control Head Pin #	Description
7	Mic. Low (Input) - Black
8	Mic. Hi (Input) - Red
23	PTT/HUB Reference (Input) - White
24	PTT (Input) - Green
40	Hang Up Box (HUB) (Input) - Blue
41	Switched B+ (Output) - Yellow

• The input and output notes in parenthesis are with respect to the control head.
• The colors shown are for the cable wires inside the microphone housing. Most microphone cables do not have the yellow Switched B+ wire.
• The HCN1063 and HCN1073 control heads have internal jumpers that can reconfigure some of the control head pins such that the descriptions above would no longer be correct for those control head pins. Other models of control heads should be checked for physical modifications (i.e. cut PC traces, wire jumpers and extra components soldered point to point on the PC board) that can have the same effect on the description. Expect to find modifications on control heads with a kit number below the model number.
• One reconfiguration example is the control head pin 41 can be changed from Switched B+ to Speaker Audio Hi. This could be done for a telephone style handset.

Systems 9000 Control Head to VIP Pin Out:

• Above is a front view of the Vehicle Interface Port (VIP) control head connector with pin numbers. Each of the three horizontal rows of pins is numbered sequentially from right to left.

Systems 9000 Control Head to Vehicle Interface Port Pin Out
Control Head Pin #	Description
1	VIP Out 2 (Output)
2	VIP Out 1 (Output)
3	VIP In 2 (Input)
4	VIP In 1 (Input)
5	DEK Data Out (Output)
18	Switched B+ (Output)
19	Switched B+ (Output)
20	DIGITAL GROUND
21	DIGITAL GROUND
34	VIP Out 3 (Output) / DEK Strobe (Output)
35	Switched B+ (Output)
36	DIGITAL GROUND
37	VIP In 3 (Input) / DEK Data In (Input)
38	DEK Clock (Output)

• The input and output notes in parenthesis are with respect to the control head.
• The HCN1063 and HCN1073 control heads have internal jumpers that can reconfigure some of the control head pins such that the descriptions above would no longer be correct for those control head pins. Other models of control heads should be checked for physical modifications (i.e. cut PC traces, wire jumpers and extra components soldered point to point on the PC board) that can have the same effect on the description. Expect to find modifications on control heads with a kit number below the model number.

Sytems 9000 Direct Entry Keyboard (DEK) Cable Pin Out:

• Above is a front view of the Vehicle Interface Port (VIP) control head connector with pin numbers. Each of the three horizontal rows of pins is numbered sequentially from right to left. The cable is not shown as it comes straight out of the back of the connector.

• Above is a front view of the DEK connector with pin numbers. The cable is hanging down below the connector.

Systems 9000 DEK Cable Pin Out
Control Head VIP / DEK J1 Pin #	DEK J1 Pin #	DEK Description - VIP Description
1		N.C.
2		N.C.
3		N.C.
4		N.C.
5	40	DEK Data Out (5 Output, 40 Input)
18		N.C.
19		N.C.
20		N.C.
21		N.C.
34	24	DEK Strobe (34 Output, 24 Input) VIP Out 3
35	41	Switched B+ (Input)
36	7	Ground
37	8	DEK Data In (37 Input, 8 Output) VIP In 3
38	23	DEK Clock (38 Output, 23 Input)

• The input and output notes in parenthesis are with respect to a DEK.
• The large connector on the back of the DEK looks like a Systems 9000 control head connector. In reality, the DEK connector pins that would appear to be Systems 9000 microphone pins are in fact the DEK interface pins, the pins that would appear to be Systems 9000 VIP pins are in fact connections for another DEK (i.e. the DEK expansion port) and the pins that would appear to be Systems 9000 Control Head Connection pins are in fact VIP II pins (see below).
• When a DEK is connected to a control head, the DEK cable (larger cable connector) is connected to the control head VIP port (pins listed above) and to the DEK connector (smaller cable connector) where it looks like a microphone should go (pins listed above).
• When a DEK is connected to another DEK, the DEK cable (larger cable connector) is connected to the DEK expansion port (pins listed above) and to the second DEK connector (smaller cable connector) where it looks like a microphone should go (pins listed above).
• From the table above, it would appear the DEK uses VIP 3 input and output. This is not really the case and the VIP 3 input and output pins are moved to the VIP II pins (see below) on the first DEK.

Systems 9000 Direct Entry Keyboard (DEK) VIP II Pin Out:

• Above is a front view of the DEK Vehicle Interface Port (VIP) II control head connector with pin numbers. Each of the three horizontal rows of pins is numbered sequentially from right to left. Ignore the cable shown in this picture, this connector (15-80212L01) does not have a molded in cable.

DEK Vehicle Interface Port II Pin Out
DEK VIP II Pin #	Description
10	Ground
11	Ground
12	Ground
13	N.C.
14	N.C.
15	VIP In 1 (Input)
16	VIP In 2 (Input)
17	VIP In 3 (Input)
26	N.C.
27	N.C.
28	N.C.
29	N.C.
30	N.C.
31	N.C.
32	N.C.
33	N.C.
43	VIP Out 1 (Output)
44	VIP Out 2 (Output)
45	VIP Out 3 (Output)
46	N.C.
47	N.C.
48	Switched B+ (Output)
49	Switched B+ (Output)
50	Switched B+ (Output)

• The input and output notes in parenthesis are with respect to the DEK.
• The grayed out pins are not used.
• Because the DEK uses the control head VIP connector pins, the VIP connection is automatically moved to the DEK (when you change the control head RSS number of DEKs setting to be higher than zero), on the side of the DEK connector that looks like it would normally have been used for a Systems 9000 Control Head to Radio connection. This relocated VIP connector was renamed the VIP II connection.
• The first DEK replaces the VIP connections (on its VIP II connector) that used to come from the Systems 9000 control head. A second DEK adds another complete set of VIP pins on its VIP II connector. The control head RSS is used to program these pins.
• The VIP II connector housing could be used for a "roll your own" radio cable connector and plugged into a Systems 9000 control head instead of a DEK.
• If you add two DEK's to a control head, each DEK has its own VIP II connector, giving you a total of 6 VIP input pins and 6 VIP output pins. The functions for all these pins are programmed by the control head RSS.

Syntor X 9000 Radio Securenet Physical Security Housing Cable Pin Out:

• Above is a front view of the cable's radio connector with pin numbers. The cable is on the left side of the connector.

Syntor X 9000 Radio Physical Security Housing Cable Pin Out (Negative Ground)
Radio J1 Pin #	Wire Color	Security Housing Pin #	Radio Pin Description
A	Red		A+
B	Black		A- (jumpered to pins 8 and 10)
1			PTT (Input)
2	BLK/BLU	18	Detected Audio (Output)
3	BLK/GRN	19	Option Tx Audio (Input)
4	VIO	5	Reset (Input/Output)
5	BLK/RED	21	Busy (Input/Output)
6	YEL	6	Switched B+ (Input)
7			Switched B+
8			B- (jumpered to pins 10 and B)
9			Filtered Audio (Output)
10			Chassis (jumpered to pins 8 and B)
11	Shield	17	Detected Audio Shield
12			A+ (later versions only)
13	RED	15	Spare 2
14	Shield	10	Mic. Low
15			Filtered Audio Shield
16			Write Enable (Input)
17	WHT	7	Bus + (RS-422 Input/Output)
18	Shield	20	Option Tx Audio Shield
19	Shield	9	Bus - Shield
20			B-
21			Channel Activity
22	ORG	12	Speaker Audio Low (Output)
23			KEY (Input)
24	WHT/RED	14	Spare 1
25	BLK	8	Bus - (RS-422 Input/Output)
26	VIO	16	Analog Ground
27	BLK/YEL	4	Mic. Hi (Input)
28
29			KID
30
31			B-
32	BLU	24	B-
33	BLK/BRN	3	Option Rx Audio
34	Shield	11	Option Rx Shield
35
36
37	GRN	13	Speaker Audio Hi (Output)

• This cable goes from the Syntor X 9000 radio and connects to the 24 pin Securenet Physical Security Housing connector. This includes HKN4289A and HKN4293A cables.
• The grayed out pins are not used.

Systems 9000 Control Head Securenet Physical Security Housing Cable Pin Outs:

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

• Above is a front view of the cable's J2 / J5 Physical Security Housing connector pin numbers.

• Above is a front view of the cable's control head connector with pin numbers. Each of the three horizontal rows of pins is numbered sequentially from right to left. The cable is on the left side of the connector.

HKN4290A / HKN4292A Physical Security Housing to Control Head Systems 9000 Cable Pin Out (Negative Ground)
Housing J2 / J5 Pin #	Wire Color	Control Head Pin #	Pin Description
1			A+ (Input)
2	BLK/YEL	12	Mic. Hi In (Input)
3			Option Rx Audio (Input)
4			Mic. Hi Out (Output)
5	BLK/ORG	26	Reset (Input/Output)
6	YEL	48	Switched B+ (Input)
7	WHI	17	Bus + (RS-422 Input/Output)
8	BLK	50	Bus - (RS-422 Input/Output)
9	Shield	9	Bus Shield
10	Shield	13	Mic. Low
11			Option Rx Audio Shield
12	GRN	11	Speaker Audio Low (Output)
13	ORG	44	Speaker Audio Hi (Output)
14	BRN	28	External Key Reset / CH Spare 1
15	RED	29	S.NET LED / CH Spare 2
16	VIO	16	Analog Ground
17	Shield		Detected Audio Shield
18	BLK/BRN	45	Detected Audio (Output) (N.C. in CH)
19	BLK/GRN	46	Option Tx Audio (Input) (N.C. in CH)
20	Shield		Option Tx Audio Shield
21	BLK/RED	33	Busy (Input/Output)
22			Emergency (Input) (jumpered to 23)
23			Digital Ground (jumpered to 22)
24	BLU	49	Digital Ground
	GRN	47	BATT +
		30	BATT +
		14	BATT -
		31	BATT -
	ORG	15	Ignition +
		32	Ignition -
	BLK/ORG	43	Speaker Audio Hi
	BLK/GRN	10	Speaker Audio Low

• This cable goes from the Systems 9000 Control Head and connects to the 24 pin Securenet Physical Security Housing connector. This includes HKN4290A and HKN4292A cables.
• The Securenet Physical Security 24 pin connector shorts pins 22 and 23 (hybrid ground).
• N.C. means there is No Connection inside the control head
• The grayed out Control Head Pin #s are not used on the negative ground cable. Some Radio J1 pin #s are grayed out because the control head pins are connected to external wires that do not go back to the Securenet Housing.
• J2 / J5 pin 1 should have a blue power wire with an in-line fuse. If this blue wire is missing, it means the cable was last used with a Spectra radio.
• The newer control heads that use SMD construction have jumpers JU7 and JU8 on their Display Board. JU7 is installed and JU8 is removed for normal use. These jumpers can be reversed (JU7 out and JU8 in) to connect the Physical Security Housing S.NET LED to the 4th control head Indicator Key display LED (4th key over the VF display counting from the left). The older DIP construction control heads do not have this option.
• The yellow highlighted pins with a wire indicated in the description do not go to the Securenet Housing. These wires are only attached to the control head connector.
• The input and output notes in parenthesis are with respect to the control head.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

• Above is a front view of the cable's J2 / J5 Physical Security Housing connector pin numbers.

3	2	1
6	5	4

• Above is a front view of the cable's J100 Physical Security Housing connector pin numbers.

• Above is a front view of the cable's control head connector with pin numbers. Each of the three horizontal rows of pins is numbered sequentially from right to left. The cable is on the left side of the connector.

HKN6059A / HKN6060A Physical Security Housing to Control Head Systems 9000 Cable Pin Out (Negative Ground)
Housing J2 / J5 Pin #	Housing J100 Pin #	Wire Color	Control Head Pin #	Pin Description
1				A+ (Input)
2		BLK/YEL	12	Mic. Hi In (Input)
3				Option Rx Audio (Input)
4				Mic. Hi Out (Output)
5		BLK/ORG	26	Reset (Input/Output)
6		YEL	48	Switched B+ (Input)
7		WHI	17	Bus + (RS-422 Input/Output)
8		BLK	50	Bus - (RS-422 Input/Output)
9		Shield	9	Bus Shield
10		Shield	13	Mic. Low
11				Option Rx Audio Shield
12		GRN	11	Speaker Audio Low (Output)
13		ORG	44	Speaker Audio Hi (Output)
14		BRN	28	External Key Reset / CH Spare 1
15		RED	29	S.NET LED / CH Spare 2
16		VIO	16	Analog Ground
17				Detected Audio Shield
18				Detected Audio (Output)
19				Option Tx Audio (Input)
20				Option Tx Audio Shield
21		BLK/RED	33	Busy (Input/Output)
22				Emergency (Input) (jumpered to 23)
23				Digital Ground (jumpered to 22)
24		BLU	49	Digital Ground (BLK/WHT ground wire)
	1	BLK/BRN	31	VF Sense 2 (Input)
	2	Shield		VF Sense 2 Shield
	3			N.C.
	4			N.C.
	5	Shield		VF Sense 1 Shield
	6	BLK/GRN	14	VF Sense 1 (Input)
		GRN	47	BATT +
			30	BATT +
		ORG	15	Ignition +
			32	Ignition -
		BLK/ORG	43	Speaker Audio Hi
		BLK/GRN	10	Speaker Audio Low

• This cable goes from the Systems 9000 Control Head and connects to the 24 pin Securenet Physical Security Housing connector. This includes HKN6059A and HKN6060A cables.
• The Securenet Physical Security 24 pin connector shorts pins 22 and 23 (hybrid ground).
• N.C. means there is No Connection inside the control head
• The grayed out Control Head Pin #s are not used on the negative ground cable. Some Radio J1 pin #s are grayed out because the control head pins are connected to external wires that do not go back to the Securenet Housing.
• J2 / J5 pin 1 should have a blue power wire with an in-line fuse. If this blue wire is missing, it means the cable was last used with a Spectra radio.
• The newer control heads that use SMD construction have jumpers JU7 and JU8 on their Display Board. JU7 is installed and JU8 is removed for normal use. These jumpers can be reversed (JU7 out and JU8 in) to connect the Physical Security Housing S.NET LED to the 4th control head Indicator Key display LED (4th key over the VF display counting from the left). The older DIP construction control heads do not have this option.
• The yellow highlighted pins with a wire indicated in the description do not go to the Securenet Housing. These wires are only attached to the control head connector.
• The input and output notes in parenthesis are with respect to the control head.
• Special connections: the HKN6059A and HKN6060A cables connect Control Head pins 14 and 31 to the 6 pin Physical Security Housing J100 connector, pins 1 and 6 respectively. These wires are "VF Sense Lines 1 & 2". Also a BLK/WHT ground wire is connected to pin 49 (Digital Ground) of the control head connector.

Syntor X 9000 HKN4246A / HKN4304A Siren/VRS T-Cable Pin Outs:

• Above is a front view of one side of the T-Connector and the cable's Siren/VRS connector with pin numbers. The cable is on the left side of the connector.

Syntor X 9000 HKN4246A HLN1185A Siren/PA Only and HKN4304A Siren/PA or VRS T-Cable Pin Out (Negative Ground)
Radio T-Cable J1 Pin #	Siren J1 Pin #	Siren Pin Description
A	A	A+ (connected to pin 12 in the HKN4246A)
B	B	A- (jumpered to pins 8 and 10)
1		PTT SYS90R Encode
2	2	Detected Audio
3	3	Option Tx Audio
4	4	Reset (Input/Output)
5	5	Busy (Input/Output)
6	6	Switched B+ (jumpered to pin 7)
7	7	Switched B+ (jumpered to pin 6)
8	8	B- (jumpered to pins 10 and B)
9	9	Filtered Audio
10	10	Chassis (jumpered to pins 8 and B)
11	11	Detected Audio Shield
12	12	A+ (connected to pin A in the HKN4246A)
13		SYS90R Select
14	14	Mic. Low
15	15	Filtered Audio Shield
16		Write Enable (Input)
17	17	Bus + (RS-422 Input/Output)
18	18	Option Tx Audio Shield
19	19	Bus - Shield
20	Zip Cord	Siren Speaker Common
21		PTT Enable SYS90R Encode
22	22	Input Speaker Low (not in HKN4246A)
23		KEY (Input)
24		SYS90R Encode
25	25	Bus - (RS-422 Input/Output)
26	26	Analog Ground (not in HKN4246A)
27	27	Mic. Hi
28	Special	65 Watt / 130 Watt Siren Speaker
29		KID
30		Switched 5 Volts
31	31	Digital Ground
32		N.C. (B-)
33	33	Option Rx Audio
34	34	Option Rx Shield
35	Zip Cord	100 Watt Siren Speaker
36	Special	75 Watt Siren Speaker
37	37	Input Speaker Hi (not in HKN4246A)

• To shorten the length of the labels, this table and its notes refer to the Siren/PA (Public Address) as the Siren. VRS stands for Vehicle Repeater System.
• The T-Cable A and B power pins are not connected to the Siren J1 connector A an B power pins. The Siren J1 connector has its own large red and black power wires. The HKN4246A does connect a wire from the T-Cable connector pin A to the Siren J1 connector pin 12.
• The HKN4246A (used with the HLN1185A) is not compatible with the Vehicle Repeater System (VRS).
• The HKN4246A (used with the HLN1185A) is the same as the HKN4304A (used with the HLN1185B and later versions) with the following exceptions: the HKN4246A Siren connection has no wires for the following pins, 26 (Analog Ground), 22 (Speaker Audio Low), 37 (Speaker Audio Hi). Also Siren pin 12 (A+) connects to the T-Connector pin A (A+), instead of the T-Connector pin 12.
• This is a T-Cable. It plugs into the radio and the normal radio cable plugs into this cable (i.e. it is a pass through connection for the normal radio cable with wires for the Siren/VRS coming out of the side of the T-Cable). The HKN4246A cable is only used with a HLN1185A Siren. The HKN4304A cable is used with a Siren or a Siren/VRS combination.
• The grayed out pins with no Siren J1 pin number shown are not installed in the connector.
• The grayed out pins with a Siren J1 pin number shown are not wired to the cable. (i.e. pins 20 and 35 are not wired to the T-Cable through the cable, but the siren speaker wires are attached directly to the Siren J1 connector).
• The 3 light gray areas are part of the Securenet keyloader connection and are not used.
• If your radio has the early version HLN4925 Personality Board, the HKN4304A cable requires a jumper from pin A to pin 12 inside the radio.
• *Special: The Siren speaker is connected via a two conductor zip-cord (it looks like a 110 volt appliance cord). This speaker needs to be connected from pin 20 (common) to one of the following pins 28, 35 or 36, depending on the speaker's power rating (the 100 watt pin 35 connection is show in the table above). See the first paragraph located here for instructions on how to access the inside of the connector to move these pins. R83 must also be checked, see the notes in this section for more details.
• It is possible to put the Securenet keyloader port special connector housing on these cables (normally connected to pins 16, 23, 29, 31, 34), but I have not encountered any factory cables with this modification. Without this modification it will prevent the use of any Internal Securenet Boards in the Siren enclosure (I am not totally sure it would work, even with the cable modification).
• In case you are curious, the Siren/PA SYS90R pins are used by the conventional HLN1318A MaraTrac version of the Siren/PA circuit board (HLN5510A). They are not used by any Systems 9000 radios.

Syntor X 9000 HKN4295A External Options Housing/VRS T-Cable Pin Out:

• Above is a front view of one side of the T-Connector and the cable's External Options Housing/VRS connector with pin numbers. The cable is on the left side of the connector.

Syntor X 9000 HKN4295A External Options Housing/VRS T-Cable Pin Out (Negative Ground)
Radio T-Cable J1 Pin #	Housing J1 Pin #	Housing Pin Description
A	A	A+ (not used on this cable)
B	B	A- (jumpered to pin 10 only)
1
2	2	Detected Audio
3	3	Option Tx Audio
4	4	Reset (Input/Output)
5	5	Busy (Input/Output)
6	6	Switched B+ (jumpered to pin 7)
7	7	Switched B+ (jumpered to pin 6)
8	8	B-
9	9	Filtered Audio
10	10	Chassis (jumpered to unused pin B)
11	11	Detected Audio Shield
12	12	A+
13
14	14	Mic. Low
15	15	Filtered Audio Shield
16		Write Enable (Input)
17	17	Bus + (RS-422 Input/Output)
18	18	Option Tx Audio Shield
19	19	Bus - Shield
20
21
22	22	Input Speaker Audio Low
23		KEY (Input)
24
25	25	Bus - (RS-422 Input/Output)
26	26	Analog Ground
27	27	Mic. Hi
28
29		KID
30		Switched 5 Volts
31	31	Digital Ground
32		N.C. (B-)
33	33	Option Rx Audio
34	34	Option Rx Shield
35
36
37	37	Input Speaker Audio Hi

• The T-Cable A and B power pins are not connected to the Housing J1 connector A an B power pins. The Housing J1 connector does not have any large red and black power wires. The Housing J1 connector pin 10 is connected to the Housing J1 connector pin B with a jumper wire.
• This is a T-Cable. It plugs into the radio and the normal radio cable plugs into this cable (i.e. it is a pass through connection for the normal radio cable with wires for the External Options Housing/VRS coming out of the side of the T-Cable). This HKN4295A cable is connected to an External Options Housing or a Vehicle Repeater System (VRS) (this version of a VRS is actually an External Options Housing and VRS combination, except the VRS crowds out the space for the Internal Option Boards). This prevents the VRS from also being used as an External Options Housing).
• The grayed out pins with no housing pin number shown are not installed in the connector.
• The 3 light gray areas are part of the Securenet keyloader connection and are not used.
• This cable does not have the large red and black power wires.
• If your radio has the early version HLN4925 Personality Board, the HKN4295A cable requires a jumper from pin A to pin 12 inside the radio.
• The Pin B to pin 10 jumper was not documented in 68P80101W97 External Options Housing manual. It was found in a factory cable with an ohm meter.
• It is possible to put the Securenet keyloader port special connector housing on this cable (normally connected to pins 16, 23, 29, 31, 34), but I have not encountered any factory cables with this modification. Without this modification it will prevent the use of any Internal Securenet Boards in the External Options Housing enclosure (I am not totally sure it would work, even with the cable modification).

Syntor X 9000 YKN4214A Dual Radio T-Cable Pin Out:

• Above is a front view of one side of the T-Connector and the 2nd radio connector with pin numbers. The cable is on the left side of the connector.

Syntor X 9000 YKN4214A Dual Radio T-Cable Pin Out (Negative Ground)
1st Radio T-Cable Pin #	2nd Radio J1 Pin #	2nd Radio Pin Description
A	A	A+
B	B	A- (jumpered to 2nd radio pin 10)
1		PTT (Input)
2		Detected Audio
3		Option Tx Audio
4	4	Reset (Input/Output)
5	5	Busy (Input/Output)
6	6	Switched B+
7	7	Switched B+
8	8	B-
9		Filtered Audio
10	10	Chassis (jumpered to 2nd radio pin B)
11		Detected Audio Shield
12		A+
13
14		Mic. Low
15	15	Filtered Audio Shield
16		Write Enable
17	17	Bus + (RS-422 Input/Output)
18		Option Tx Audio Shield
19	19	Bus - Shield
20
21
22	Zip Cord	Speaker Audio Low (2nd radio zip cord)
23		KEY (Input)
24
25	25	Bus - (RS-422 Input/Output)
26		Analog Ground
27	27	Mic. Hi (Input)
28
29		KID
30		Switched 5 Volts
31	31	Digital Ground
32		B-
33		Option Rx Audio
34		Option Rx Shield
35
36
37	Zip Cord	Speaker Audio Hi (2nd radio zip cord)

• The T-Cable A and B power pins are not connected to the Second Radio connector A and B power pins. The Second Radio has its own large red and black power wires.
• This T-Cable is used to join 2 separate radios (i.e. one VHF and one UHF) together. Then a regular radio cable is plugged into the T-Connector and a HCN1063 Systems 9000 Control Head.
• This is not the same as the HHCH dual radio system. The HHCH requires a System Interface Unit to go between the HHCH and each radio.
• To make this work, each radio must have a special firmware chip located at U501 in both radios. Without these 2 special chips this cable configuration will not work (the same chip is used in both radios and this chip is NLA from Motorola). Also a special dual radio RSS must be used to program the radios and control head.
• The grayed out pins with no 2nd radio J1 pin number shown are not installed in the connector.
• The 2 yellow highlighted J1 pins shown are not wired to the cable, they go directly to a speaker via a 2 conductor zip-cord (it looks like a 110 volt appliance cord) style cable on the 2nd radio connector.
• It looks like the YKN4214A cable can be made from a regular radio cable that has been cut (the control head connector side is not needed). The factory cable is about 6' long. You would need to add a T-Connector to the cut end of the cable. You would also need to open the other connector housing to move some wires and add the speaker wires.
• Please see this Batlabs page for more information on this radio configuration.

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