Originally Posted by BrianW
Did you check the fader setting?
That's a good idea---those settings can be too easily accidentally changed sometimes.
Originally Posted by Ruthless
It's a Kenwood system that I think was installed by Sportsmobile when converted. I agree that it doesn't seem like a wiring issue. Wasn't sure if there was a fuse somewhere. Will likely have someone look at it as I know very little about it. Thanks
I had a Kenwood Excelon that turned out to be a huge POS, sent it back under warranty for repair and its STILL a POS, same issues as before. Its been retired and awaiting recycling---I'll stick with Sony thank you very much.
If the settings haven't been changed you could have lost part of the built in rear amplifer. I'm assuming you are NOT running that head unit through a supplemental 4 channel external amp too? If so that should be checked for both input and output wiring issues. If those are intact then the external amp could be an issue too.