Table 1

Table 1 Hookup Chart for Control Head Plug and Interface Board

Control Head Plug Internal Wiring

Molex pin	Function	Wire Color	Control Head Pin
1	Ground	Black	11
2	RX Audio	White	23
4	TX Audio	Yellow	15
5	COS Output	Blue	26
6	PTT Output	Orange	16
7	PL Decoder Output	Red	24
9	PL Select Input	Green	25
-	Volume / Squelch Hi	Brown	20
-	Volume / Squelch Lo	Black	1
-	Volume Wiper	Blue	2
-	Squelch Wiper	Green	19
-	Speaker Hi	Brown	21
-	Speaker Lo	Black	17
-	+12 Volt Main Input	Red #12	B
-	Ground (main)	Black #12	A

Note 1: Pins B, 3, 8, and 22 are jumpered to +12 Volts inside the radio.
Note 2: Pins A, 9, 11, and 17 are jumpered to Ground inside the radio.

Wiring From Interface Board to Radio

Function	Color	Destination
Ground	Black	Interconnect Board Ground
+12 Volts	Red	Audio / Squelch Pin 16
+9.6 Volts	Orange	Audio / Squelch Pin 4
Discriminator Audio	Green	Audio / Squelch Pin 2
PL Decoder Input	White	Audio / Squelch Pin 11
COS Sense Input	Blue	Audio / Squelch Pin 8
RX Mute Output	Yellow	Audio / Squelch Pin 10

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