I installed a deck in one of my friends car the other day. Anways I got the deck running fine and all. But... The power locks and A/c dont work anyways more? WTF how stupid can they be to wire it all up into one system. Does anyone know how to resolve this problem? I was thinking maybe get an adapter for the old plug because the new lug doesnt hold all the wire and theres 3 wires left over I think those are the A/c, powerlocks an clock. Anyone got any Idea's?

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you may need to get a helms manual for your car, it should tell you what those wires are for. Many cars are starting to integrate electronics into single housings for cost reasons.