Hitman's Pontiac Trans Am Forum

Trans Am Information => Trans Am Tech => Electrical => Topic started by: jonesg9 on July 25, 2019, 10:47:22 PM

Title: 1978 Trans Am engine bay wiring diagram
Post by: jonesg9 on July 25, 2019, 10:47:22 PM
I bought my car recently minus the engine and transmission. The seller cut all the ends off the wires atr the connections so all i have is a bunch of wires, different colors, but no idea where they go because the ends with the connectors have been cut. Does anyone have a complete engine bay diagram for a T/A with a 400 and automaatic trans (1978)?

thx in advance
Title: Re: 1978 Trans Am engine bay wiring diagram
Post by: Wallington on July 26, 2019, 12:48:18 AM
PM me with your email, I'll send a large colour diagram. If they are all cut, you may end up well ahead also obtaining a good, used and complete harness instead. It isn't hacked up plus many of those plugs are hard to get. The plugs themselves will cost more than the harness.
Title: Re: 1978 Trans Am engine bay wiring diagram
Post by: Mooshs78TA on September 14, 2021, 04:21:19 PM
PM me with your email, I'll send a large colour diagram. If they are all cut, you may end up well ahead also obtaining a good, used and complete harness instead. It isn't hacked up plus many of those plugs are hard to get. The plugs themselves will cost more than the harness.

I know this is a few years old but would you still happen to have that large colour diagram? If so could I trouble you for it? I'll PM you my email. Thanks in advance
Title: Re: 1978 Trans Am engine bay wiring diagram
Post by: b_hill_86 on September 14, 2021, 08:28:51 PM
He frequents the site still and I’m sure he still has what you need. Just give it a few or send him a PM if you haven’t already. Depending on forum setting he may receive an email notification of your PM.
Title: Re: 1978 Trans Am engine bay wiring diagram
Post by: Wallington on September 14, 2021, 09:39:26 PM
Sending shortly, just heading home.