M50 Wiring

[Slovik]

Helping a friend with his M50 swap and most everything has gone smoothly. My question revolves around the two wires that come off the wire leading to the diagnostic port. The shorter appears to be a ground wire that goes to body, does the longer one go to battery power?

[ForcedFirebird]

Peel back the shrink wrap to expose the wire color (and can re-shrink it later). Brown is ground, red is power (obviously).

[Slovik]

Thanks John that's a excellent suggestion. I was also hoping someone would just check under their hood and let me know what they did.

[ForcedFirebird]

Anytime. For what it's worth, I have been swapping these cars for a long time on a professional level and to this day, peel the shrink wrap. You never know what was done 10,15, or 30yrs ago, so it's best to be sure. Nothing worse than frying an engine or body harness with a simple mix up. :/

[AndrewBird]

Anytime. For what it's worth, I have been swapping these cars for a long time on a professional level and to this day, peel the shrink wrap. You never know what was done 10,15, or 30yrs ago, so it's best to be sure. Nothing worse than frying an engine or body harness with a simple mix up. :/

Truth. We accidentally hooked a ground up to power once and fried one wire all the way through the harness. Could have caused a fire, but didn't luckily. Still had to pull the harness and fix it.

[ForcedFirebird]

Truth. We accidentally hooked a ground up to power once and fried one wire all the way through the harness. Could have caused a fire, but didn't luckily. Still had to pull the harness and fix it.

Guilty as charged! Only takes one "oh sh1t" to ruin 100 "atta boy" :(