2010 aftermarket radio and party mode

[Iluvboost]

I installed a radio in my 2010 4runner using an aftermarket harness. Everything works and the front speakers play but the rear door and hatch speakers don’t play. Pressing party mode and depressing it does nothing. They all played with the original radio. I don’t have the jbl system.

 

[osugsxr]

Double check the wiring connections, sounds like a harness issue or fade of the radio could be up front

 

[Iluvboost]

It looks fine. I even printed the wire schematics to make sure the speaker wires matched.