I don't recall anything cut or changed on mine. If anything its components missing and wires are still there. In some cases its just extras where the factory used same harness. I think a few of them are for the smoke and mirrors emissions appeasements that Ma Mopar was doing at the time. I have acquired a couple 'black box' items that I plan to plug in at some point. I want to get it 'looking' original-including them. I may do some creative wiring though. If anything acts up I just open the circuit somewhere. I keep an eye out for unmolested 75s to compare. I have seen a couple pics, but not an actual vehicle to get all the details. Its tough to find a 'reference' car for a slant with all the crap still on it!