Master Shit Fixer
Good luck. Let us know how it goes.
Its much more involved and includes purchasing 3 harnesses which plug into the IH1 and IH2 ports. Do I need to do that?
I'd say no, you don't need to do that in your case. It sounds like you've already got connections to the front and rear speakers.IH1 is a 10-pin connector furthest from the firewall. IH1 carries the front speaker wires. IH2 carries the rear speaker wires
The amp ground does not pass through to the head unit. The amp's ground is the brown wire attached to pin 4 of the amp's primary connector. Make sure it is actually grounded (at location "IF"...which the full wiring manual will show the location of). It wouldn't hurt to run the Metra black wire (ground) to the exact same grounding point. It also wouldn't hurt, as a test, to patch the radio's ground lug to the body of the amp (I'd use alligator clips to do this temporarily). Then see if you still have pop.The fact that the head unit turned on without issue leads me to believe the ground coming from the harness is good. Perhaps the amp ground itself is bad? I'm not sure, but I would have thought the amp ground would end up passing through to the head unit.
Yes, gray wire, pin #3 at the amp...this is accessory power (red radio wire). Extend it up to the radio cave. Also, pins #6 and #2 on the same connector (both are blue/yellow wires) are battery power (yellow radio wire). Use these wires from the harness side, and you can still remove the amp completely.where am I to get power for the head unit as this initially came through the amp and the R6 connector? I suppose I could leave the amp there and just is it for HU power but that seems a bit silly. Are any of the other wires in the IH1 or IH2 harness hot?