Hey folks, im trying to install a stock radio i bought off eBay. Im trying to wire in the factory harness because the previous owner wanted is touch screen HU back and cut the wires harness and all. I was left with a big hole in the center dash filled with a bunch of wires. the harness i bought is the Metra 71-1743. There is no ground wire coming from the harness, and the back of the bag says "if black wire isn't present then to ground to the chassis." Question one is, i know where to ground to the chassis but where do i ground to the actual HU? since there isn't a ground coming from the harness, do i ground to the outside or shell of the HU? If so, where is there a good spot to ground on the HU? Ive attached photos of: the wires coming from the truck, the new harness or harnesses, the back of the bag of the harness, the HU i bought off eBay. Many thanks!
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