Recent content by hopper33

I'm by no means an expert, but I have looked over the mute wiring repeatedly. The only thing i can think of is that it's grounding somewhere, and I've looked over every mm of the wire and nothing is exposed to allow for the grounding. It's only a total of maybe 6 inches of wire between the HU...

Did that already. Thanks though.

It's the Metra GMOS-01 wiring harness/adapter. It's required for aftermarket receivers in my vehicle (Trailblazer) since most the electric and security functions are connected to the vehicle's stereo system. That's my understanding of it anyways. Without it, the aftermarket receiver wouldn't work.

I installed a Pioneer AVH-P4300DVD a few years ago. It connects through a GMOS-01. It has started randomly muting itself, and I am unable to unmute it. It will eventually unmute on it's own, but I haven't found much of a pattern. I have taken it out and cannot find it grounding anywhere so I am...