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Question:

2002 chevy impala- Need help with a few wires aftermarket radio insatllation?

I need help with the red and yellow wires. Hooked everything up color to color, but my stereo didn't work just when I push eject on the cd player but nothing else. And then I hooked up all of the red, and the yellow wires, and that made it work, but the radio has to be turned on and off manually. It won't work together when I turn off /on the ignition, and acc positions. What am I doing wrong? I would love for some one to give me a detailed description or layout of the wires that should go together I have a 2002 chevy impala with inactive onstar I have the wire harness and the antenna adapter I do have an amp I'm pretty sure it's that silver box next to the speakers in the roof of the trunk. Please help

Answer:

Which wiring harness did you buy? A simple $20 one that's just a connector with some wires on it? Or the $100 one that comes with an interface box? Because you need the $100 one. Your factory harness does not have a 12V ignition source in it. This is what your radio uses to tell when the car is on/off. So although the $20 one may plug into your factory harness, it's not the correct one for your vehicle. That harness fits like 10 different model GM cars over a 10 year period. Take that harness back and ask for the GMOS-04 interface if you have the Bose system and the GMOS-01 interface if you don't. Your next question is going to be, Well can't I make this one work? Yes. You can. But you'll lose all your door chimes, OnStar (if equipped), and your retained accessory power feature. To make it work, you'll have to run your own ignition wire from elsewhere in the car. I'd go right to the key cylinder. The wire you're looking for should be heavy gauge pink. Remember to put a fuse in line with the wire you'll be running.
did you get a after market wiring harness for your car it is easier to hook up

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