99-04 Mustang Audio problem help please.?

I own a 2002 mustang gt and when I play my audio it only plays on my drives side, it plays on the passenger side but faint. And the sub speakers in the back that come with the car only play out of one speaker. I’m pretty sure the passenger side tweeter is bad which makes the rest of the speakers bad. Or could it be the head unit that’s bad? Which makes it play only on the drives side?
Answers

don r

First check the balance adjustment. Next check the speakers' wires and plugs. Last, check the speakers.

JetDoc

If it's a factory installed radio, READ the owner's manual that came with the car. It will tell you how to adjust the radio to balance speaker volume from side to side. If it's an aftermarket stereo, then you'll need to find the manual for the radio you have now.

Anonymous

Head unit is likely shot. See a car audio shop to get a proper diagnosis.

Anonymous

It could be either. Without doing a proper test on the system we cannot tell you. It's either a wiring issue or a dead channel. A single tweeter being out shouldn't account for it. Because it is so old, I'd suspect the head unit.