So that 2nd (smaller) harness is just for the speakers? So i have no clue how the other one worked. I did have an amp in the old one. No RF system in either. I searched before and I thought that 2nd small harness just has to do with amp and would not be needed.

Also, my harness is spliced with the power and something else with my XM Direct adapter. Didnt hook that up yet when i tested. Dont know if that would have caused no sound in the system.

Really lost.