What is the AS1 HEAD UNIT CONNECTOR

[Mike Brennan]

And where is it and what does it look like?
Thanks

[nordwulf]

The connector that connects to the back of the AS1 head unit? I am pretty sure you won't find it in your 9-5 because all US 9-5 had the AS2 or AS3 sound system.

[Mike Brennan]

Ok, I was likely trying to nail this down from a UK post. Is the telephone mute wire still the yellow one and should I just cut it to get the radio off Telephone. Research seems to suggest it is grounded somewhere.

[Mike Brennan]

Telephone mute is Pin 6 yellow. Just cut it?
: Ok, here it is.
Note that the low level signals between the AS1/AS2/AS3 head unit, the AS2/AS3 amplifier, and the CD changer are not the common single ended (signal & ground) used in ordinary consumer audio, instead it is a balanced (signal+ & signal-) used in pro audio.

The information the tables below were taken from the 9⁵ workshop manual for model years 1999 and 2002. Unfortunately wire colours/colors may vary between model years. There were few wireing changes until model year 2001.

Function	Direction	Pin #	Colour/color
Power and Control Signals
No connection	-	1	-
Power supply (ignition)	in	2	orange MY 1998 - 2001 red/blue MY 2002 - 2005
No connection	-	3	-
Ground	-	4	black
Mute control Note	out	5	black/white
Phone mute Note	in	6	yellow
Remote on control for amplifier (also antenna) Note	out	7	green
Power supply (constant)	in	8	red
Line Level Outputs
Line out right rear -	out	9	brown/red
Line out right rear +	out	13	gray
Line out right front -	out	10	blue
Line out right front +	out	14	red
Line out left front -	out	11	red/white
Line out left front +	out	15	blue/white
Line out left rear -	out	12	orange/white
Line out left rear +	out	16	yellow/white
Line Level Inputs and I-BUS

[Mike Brennan]

Never Mind: It is a wagon so I was able to disconnect the entire On Star system's main plug. All is well again.

[nordwulf]

I still need to disable the Onstar in mine. Did you unplug it from the Onstar box in the back in the little floor compartment?

[AT ONE SIR]

I still need to disable the Onstar in mine. Did you unplug it from the Onstar box in the back in the little floor compartment?

I would be interested in knowing how to disconnect the OnStar on my wagon as well. Would this affect either an aux in mod or a future motorola bluetooth setup?

[Mike Brennan]

In the box under the floor panel on the right side on a wagon. The on star system is there. On the rear of the box is the large and wide pin connector and is held in with two wheel screws. Just unscrew them and pull the plug out. Ended my problem.