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Thread: CD Changer Serial Data
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08-21-2007, 09:50 AM #1
CD Changer Serial Data
Does anyone know the nature of the serial data that goes between the head unit and the cd changer? There are only 6 wires that plug into the cd changer: power, ground, serial data (to / from radio), audio right, audio left, and audio ground. I'm trying to make a an auxiliary input using the cd changer input but the head unit won't switch to the "AUX" input unless it "sees" a cd changer there. Has anyone ever successfully tricked the head unit into thinking a changer is there? Thanks.
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08-21-2007, 10:44 AM #2
- Join Date
- Oct 2005
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- Austin, Tx
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- 39
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Black/Black- 2000 Trans Am WS6 A4
they make a harness for the radio that does exactly what you are seeking... I think it's made by PAC
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08-21-2007, 03:58 PM #3
I know they do. I wanted to do it myself but the information about the serial stream is nowhere to be found.
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08-26-2007, 03:22 PM #4
- Join Date
- Oct 2005
- Location
- Austin, Tx
- Age
- 39
- Posts
- 532
Black/Black- 2000 Trans Am WS6 A4
You will never find the information. You will have to reverse-engineer it, much as the guys who make the USB-->Headunit adapters did... same with the Ipod-->Headunit adapters... takes some serious work...
That sure would be neat if that information was readily available though....
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