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I have a ground wire coming out of this black piece with a black and white wire also coming out. Are these both ground wires? I dont want to ground out the black/white wire if I’m not supposed to. Its located above the fuse panel. Thanks for any help! Its a 1988 5.8L 351 Bronco
That's the back side of your fuse panel you are looking at and the main loom?
Find yourself a 1988 EVTM for your Bronco
It will show all those wires
Can you tell where the wires go?
I have a 1990 EVTM but it will not help you
I would not assume it is a ground just because it is black but it most likely it is a ground
Your local library should have AllData for you to use free
That site has the Ford EVTM pages as well as all the other service manual pages for your truck