Just had a new single din radio installed recently and noticed that only the rear speakers work. I’ve been doing a troubleshoot of the issue and swapped one of the front speakers to the back and realized that the speakers for the door are good but I’m not getting any sound when connecting to the door wire connectors. The wiring is also correct as in the diagrams for the radio. Is there a separate fuse or some type of amp for the front speakers that I’m missing?

 

Did you try the fade on the radio?

 

Yeah just checked, no luck!