Any car audio experts (install/wiring) out there?

[Cindy B]

I have a Jeep Cherokee with a factory installed Infiniti audio system.

The rear speakers seem to be not working.

My DH and I flipped up the seat, to try to determine if the speaker wire is loose or not--but I can't determine which wire is the rear one.

And also, if the wire is bad, how challenging is it to get replaced?


Who would you reccommend to change it or is it a DIY project?

Thanks