Originally Posted by
Notladstyle
I don't know who started that ridiculous rumor that wrapping copper wire around the grounds will help anything.
The common ground for the radio is the ground wire that runs to ground from the harness.
If anything you should route the harness ground to the chassis at a sanded spot with a stainless steel screw.
Proper wiring in the first place > that ugly picture ^
There is a diffrence between grounding the headunit and grounding the rcas This is a common problem on poineer headunits that is why I asked what it was.