I put a new head unit, front and rear speakers in my car and I am only getting sound threw the front of the car. I wasnˋt sure if the factory amp went out and causing a short to the rear speakers. It had the factory infinity sound system in it. Can anyone help me out with this problem. I would still like to use the factory amp with the aftermarket speakers and HU if possible.

Thanks
Aaron Dillon

 

have you tried using search feature ,remember seeing a few posts over last year or so about changing the head unit problems

 

You probably got the wrong harness. There are two different ones; one for the Infinity system, and one with no Infinity system.