I have a 2001 Dodge Ram with the dumb infinity system and the whole passenger side of my truck won't work, speaker wise. not the tweeter not the door speaker and not the rear speaker, regular cab. this leads me to believe there is something wrong with the amp on the back of the door speaker because this powers all three of these I think. the whole driver side of my truck works and it's just annoying to me and Id like a fix and any suggestions before I take the door off and break some door tabs haha, any suggestions? thank you

 

I just recently replaced and ripped apart my entire infinity system. The only thing it could be is loose wiring or wiring harness plug into the back head unit. Otherwise it's the amp on the back of the passenger door panel.The doors not hard to take off but the wires are hard to find out what's what. None of the charts add up and the colors were always wrong.I just had to test it a bunch

 

well the thing is I just replaced my head unit to a newer model and it was like this with the old one too and I made sure all the connections were strong, so I'm hoping it's just a loose wire somewhere. and when it's 10 degrees out with no heated garage the doors can be a pain with cracking haha, thanks for the answer though

 

I had the same problem on my old Ram, I ended up just rerunning normal speaker wires from the aftermarket head unit to the doors.

 

Sounds like a wiring issue. Check and make sure the stereo settings are correct first. If so, check the wires at the speakers.