QUOTE(TROJANMAN @ Apr 22 2024, 06:35 PM)
Kind of on topic......What does this (black) harness connect to?
asking for a friend......
That's the seat belt interlock relay housing. It would have 2 relays attached to that housing.
Looks like it's been jumped already. See the larger yellow/red wire that's been spliced together. That's the fix. I would take a look at splice job. Most of the time they are just butt connected together. I would clean that up and solder those wires together. Rest just tape up and leave under the seat. I jumped out my brother's 74 but left everything in the factory location.