There are three blue wires on my cobalt 2007 stock radio, wich one is the acc?

Question

then how do i wire my amp to the acc to not run my batery low?

Answer 1

There is no accessory wire in a Cobalt stock radio plug.  The factory radio is controlled by the vehicle's computer through a data wire.  If you're installing an after-market deck, you'll have to find another source of accessory power.

Answer 2

On a  monte carlo stock radio there were three,one operated the power antenna,one the optional amp the third was open and ran to nothing.So I assumed that all three were  [remote]wires  to run an remote accessory as well. The red was a switched 12V pos. Orange was [constant] 12V pos [memory]I hope this helps.

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