Quote:
Originally Posted by jeepguy_1980
If the Scosche kit is like the Metra, it does exactly what I'm suggesting that you do. It takes the two wires that would normally go to the OEM radio and mixes that signal with the aftermarket radio's RCA out.
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No the Scosche does not get extra wires from what you call the Onstar communication module to the right of dash. You plug on the Onstar to the Scosche harness and it feeds the voice output to the 4 channels front and rear.
So this tells me that the Scosche harness must get the onstar voice from on of the 2 connectors that plug into the car in the dash.
I like how we are all "working this out" though
