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does this interface work with a 2001 grandprix. The one I purchased. Swch-1 doesn't seem to work. Wondering what to do with little factory plug attached to harness. Installing a Kenwood kc-565u with a 4000-1 adapter that adapter doesn't include the little plug on exciting factory harness for factory radio/ cd player. Also do you have to hard wire and cut off factory wire plug?
Sorry, there was a problem. Please try again later.This harness is the only one you can use for GM cars. It’s not just the steering wheel switch it is needed for. GM hooked up other items through this harness that you need it for.
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