One day maybe I will learn to let people who understand this stuff do it for me and just fork out the money. Until then, I will continue posting questions here where you all have been very helpful in the past.
Ok so here we go. Im in the process of replacing my head unit, adding an amp and 6x9speakers. It all seems straighforward enough.....Except that I cant get the new head unit to acknowledge that it is getting power. I turn on accessory and everything else comes on fine. I have tested and verified that there is power running through the red and yellow wires (using a voltmeter) to the unit. Still nothing. In trying to figure this out (Im about to return the head unit and see if by some chance I got a bad one) I am a little confused about the grounding for the head unit. All the wiring diagrams state that the black wire in the harness is the ground. Fine, no problem. Except that it just loops to another hole in the harness and then seems to end (see 1st img). Second, there is a large metal ring that Im assuming is the actual ground (2nd img). Any help/ideas/obvious troubleshooting that I missed would be much appreciated. I have also checked the fuse on the head unit, its fine.