I’m doing an ls swap and was just cleaning up the og harness and couldn’t figure out where these plugs belong to. I believe they’re on the back side of the engine. The harness is for a 95 gmc c1500 5.0l
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1995 GMC C1500 5.0l. Well the small plug I found out is the oil pressure sensor plug. Yeah I wished I labeled em but got to impatient. Lesson learnedWhat make , model, year are you working on. Next take a second and tag / mark the connectors. Time saving grief.
Do you have the FSM wiring diagrams? They identify all wires, connectors, locations, routing. And end views of connectors.
In a sticky above there are links to free PDF downloads of each year GMT 400 service manuals, factory.
Some people can guess some connectors, most look them up in FSM if not sure. Don't try to memorize every connector, taking shortcuts you pay more for later.