85 GT engine harness work in 83 GT

[BioJester]

85 GT engine harness work in 83 GT

As stated, found a 85 GT harness, the harness I have now was in a fire at some point in its lifetime and was butchered back together. trying to get AC working for summer and there is also some electrical gremlin running loose under hood. Think I can make a 85 harness work?

[xctasy]

wide open throttle cut off, upshift indicator, all different in detail...

Your main question is 'do I have offstreet parking" and " can I make the core parts work while doing a loom swap".

Because its not fuel injected, yes you can, and it'll be easiER, but not eaZEE.

Fords of that era were wired fluid....there were running changes with lots of the solenoids being changed from normally open to normally close and vice versa. Certain major parts of the dash...even though the wire up, they "not workie'.

Ford Production costs were very low compared to other automakers, because of the wiring gage and coating, and the abilty to use similar looking parts, but rewire the pinouts could be randomly different.

If you've had wirng issues, then an 85 loom will make some things worse, but we can tell you whats different.

Your main issue is shorts, and that the wiring WILL be totally different to the Electric and Vacuum Troble Shooting schematics, the Haynes manuls, and MINUTELY different to everyone elses 85 GT.

Plenty of people consider Japanese Dis-embowelment as a better option than a rewire using the Ron Francis kit, but it might help.
I've posted Page 19 before, where Brock and Trey discuss the wiring matters.

http://vb.foureyedpride.com/showthre...-Thread/page19
http://vb.foureyedpride.com/showthre...ire-85-mustang
http://vb.foureyedpride.com/showthre...=bob%20francis

So go ahead, but it'll take a lot of time smoothening it out. The advice is get a area of pavement or cement undercover, and map out the loomb, then photo, ask questionS, then DO

[mustangxtreme]

Download the wire diagrams for both and compare them. This will give you a much better idea.