Getting a continual popping in the speakers, sound cutting out, and general distortion.. Thinking it was a bad amp, I replaced the amp with another, same thing. Possible that the 2nd amp is bad? or something else? Grounds check out visually, but I haven't dug into the whole harness either. Anyone know where I can find the correct wiring diagrams? HU - 8N0 035 186, AMP - 8N8 035 223.

 

Fixed! Bad connections to rear subs.