My ram has a infintiy car stereo that only has 3 front speakers that work now. All the door speakers stoped at the same time. I have been told its likly the amp.. Took the door panel off two wire hook up to speakers no power comming to them .. Any body know were the amp is or is it built into the main. Is there a fuse somewere that you need a flashlight and a hound dog to find.. This problem makes for some very quiet rides and in a big desiel its just not nice..

 

Welcome to the site. I will move this thread to the Cummins section,
FF

 

The amp is behind the glove box. it could be the fader section on the head unit as well.