or find out whats wrong with the current one lol

 

I have a 2000 dodge ram quad cab with infinity factory stereo, installed after market radio and harness, connected blue amp wire and antenna wire to 12+ constant yellow, and only get sound from driver side tweeter, and passenger door speaker, no rear or driver door.

 

2000 dodge ram infinity stereo system, after market jvc stereo and harness installed was a sub woofer box installed, driver tweet and pass door speakers only working, blue amp and blue white antenna wire connected to 12+constant yellow, why won't the other speakers work?

 

I didn't have the infinity system but my front two speakers were not working when I bought the truck. Replaced them with aftermarket Pioneer's and got sound. The door panels are not hard to take off maybe just take the passenger speaker out and try another one you know works.