Thread: 2008 Pontiac G6 GXP CarPC Project Version 2

So is that a power switch we're looking at in the last picture?

My only critique is that the screen might look better centered in the bezel, but then you would have to relocate/lose the IR port. Overall, it looks really nice.

Oh, was that a standard 1.5 din GM stereo in there before? The screen fits very well vertically.

Originally Posted by Xygar

So is that a power switch we're looking at in the last picture?

My only critique is that the screen might look better centered in the bezel, but then you would have to relocate/lose the IR port. Overall, it looks really nice.

Oh, was that a standard 1.5 din GM stereo in there before? The screen fits very well vertically.

It's an ignition switch that goes to the M2-ATX. Eventually I'll put a 3 position switch in there connected to battery, ignition, off for always on, on with ignition, and always off. That was a last minute thought and I had one on hand.

I'm having my buddy take a standard GM 2 DIN kit and the original LCD bezel and mold them together so hopefully that will look better, but I agree with you.

It was a 2 DIN radio before, a 6 CD monsoon headunit.

Just wondering if anyone will get this.. Had some questions on the audio hookup on your g6.. Having trouble with mine

Originally Posted by Tomwithey1

Just wondering if anyone will get this.. Had some questions on the audio hookup on your g6.. Having trouble with mine

What kind of questions?

I have a simple 2 channel amp with the speakers wired in parallel. There is no front/rear level adjustment but there is left/right balance via the windows sound control. I did have a monsoon amp, not sure if it makes a difference.

I too had a question. Did you get your steering wheel controls working?

I purchased the joycon ex and was wondering how you wired it up?

I have a radio adapter GMOS-Lan-04, but not sure which wire to use to get the steering wheel control info from.

Thanks,

Rog

It's pretty simple to wire that up. There is a 2 wire connector off of the Joycon, a white and black wire in it. White goes to the steering wheel controls signal wire, black goes to ground. USB to your computer, install software, map signals to keyboard keys, map keys to commands in your frontend, done.

Before you ask, no I don't remember which is the signal wire, google is your friend.

Wow Netsrikk thanks for the info.... I did get the instructions with the Joycon Ex, so that part makes perfect sense, but the wiring from the steering wheel is what I am looking for.

I thought with the GMOS-Lan-04 I would have all I need to wire up the Joycon Ex. I was hoping there would be one wire coming out of the Lan-04 that would carry this resistance change when a button is pressed on the steering wheel.

This was the info I was asking about, thinking the same would be true on the Pontiac.

Hi Rogoflap i was just wondering if you found the correct wire for the Joycon Ex.. I also have a Pontiac... Thanks for any input

I went looking around and on the CobaltSS website I found the following:

http://www.cobaltss.net/forums/showt...ed+GM-LAN+line

No exact wire / wire color was found, but other info was shared as I am sharing below.

I have not had time yet to check this out, but maybe this weekend I will have time to find the correct wire...

So on the vehicle side of the harness there are two wire.

1) This is the wire that the head unit supplies the +10v to, since your head unit is gone, you just use a +12v supply from the car. This is the reference voltage

2) This is the return wire, this wire is the one that carries the +12v signal after it's affected by the resistors. This is the reading wire you are talking about.

The real key and this got me the first time is to make sure that wire #1 has some power supplied to it or wire #2 can't product that voltage output you need for your controller unit.

So I can't be more specific, I install it many years ago. I will try to digg through the manual and figure it out.


Quote:
Originally Posted by rogoflap
Thanks for posting this fist of all. I have an HHR but it uses basically the same wire hareness.

One question I have is help understanding the steering wheel controls. What pin outs from the original wireharness woudl I use to measure the voltage differences?

I have a device used with my Carputer that can measure these differences. It has two wires. One to ground, the other to the wire where the signal differences can be measured.

below is part of the post you had posted a while back and helps me better understand things, but not exactly what wire carries the 10V with the differences.

Thanks,

Roger


the radio DOES communicate on the Lowspeed GM-LAN line, it recieves VIN information for TheftLok, illumination dimming inputs, and signal for speed compensated volume.

Some audio functions are available using the steering wheel controls. The steering wheel controls are actually a resistor network which consists of multiple momentary contact switches and a series of resistors. The switches and resistor network is arranged so that each switch has a different resistance value. When a switch is pressed, a voltage drop occurs in the resistor network which produces a specific voltage value unique to the switch selected. These specific voltage values allow the radio to identify which switch has been pressed. The radio responds just as if the corresponding radio front panel button had been pressed.When the radio is ON, the radio supplies approximately 10 volts to the switches on the 10-volt reference circuit. The specific voltage signal from the switch is returned to the radio on the steering wheel controls signal circuit.This may inhibit the use of the redundant control with an aftermarket head unit.

(Gm Service Information 2005 Chevrolet Cobalt)