Hey guys and gals. I just picked up a 07 hummer h3. It has the monsoon set up. I out in a new pioneer double din this weekend because the factory nav one failed. I used a gmos4 rap module.

The issue is after install the speakers will work for about 5 sec then turn off. They only work when first turned to acc/run/started. I have gone over this wiring and can't see what I missed and reset the module like 10x to get the same result. I do not know if this issue was present before as the radio was fully dead. Any ideas? I was thinking maybe a bad gmos4 module and ordering another to swap.

Thanks

 

Correction. Speakers work fine on acc. Just not in run position