Rep Power: 0

Help!
Had to replace the factory unit the display was shot and couldn't read the display anymore so I went with a JVC aftermarket double din.
On both the Factory and New head unit im only getting sound from the passenger door tweeter. All other speakers are quiet... no hum or static. Ive checked all possible fuses and nothing.
tips on what to look for or how to troubleshoot this please.... im lost!
We just purchased this car for our daughter need to get the radio situation worked out. Any help is appreciated.

Ive double and triple checked all the wiring... I did use the harness adapter but like I said even on the factory unit same issue....

 
Rep Power: 223

Triple check your wiring and any connections. Check continuity on the speakers, and the speaker wiring. If you don't have a meter, you can pulse them with a 9v battery.