Does anyone know if it uses a amp for the back speakers and do I have to run a separate wire to trigger it to get my back to speakers I mean all my front speakers work perfectly but I've seen some videos where it's kinda common for people to have problems with the back after a new radio install
I got a new radio in my 2010 GMC Yukon SLE
And my back speakers are not working at all the only speakers work are the front and I have no clue how to fix this.. anybody know how to help ?
Anyone know what that blu/bull plug is ?
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