Donor wiring

[Danthony89]

I have aquired a 94 GT for my project, I will use the 5.0L out of it and I know I need the engine harness and the ECU wiring, with the base kit what other wiring will I need for the roadster to be completed? Another question, will the engine run correctly without o2 sensors or will I need to install bungs in my new exhaust?

[MPTech]

I bought my MK4 base kit almost 2 years ago and it does not come with a wiring harness, so I purchased a Painless.
I like it, just bought one with too many circuits. Take a look at what they currently offer or call them and ask what they recommend for a FFR Roadster.
I would also HIGHLY recommend buying Chuck's (MustangMedic) dieted engine harness. So much nicer and cleaner than doing it yourself.
Call him, great guy, and you'll be doing yourself a favor.
Dieted harness engine whole car sets (http://www.ffcars.com/forums/19-parts-sale-wanted/302939-dieted-harness-engine-whole-car-sets.html)

With a '94, if you plan to run EFI, I believe you will definately need 02 bungs. MEASURE 3 TIMES before you drill your holes and mount them.
Kicking myself, should have measured better. please helpl (http://www.ffcars.com/forums/17-factory-five-roadsters/299202-kicking-myself-should-have-measured-better-please-help.html)

[Danthony89]

Thanks for the input, will look into the harness.

[CapeCoralCobra]

MPTech's dead on. I did my own donor wire diet, took two weeks of researching wiring diagrams and clipping & re-looming as I went. I got rid of more than I kept and still probably could have pared it down a little more, but it has worked great. You need at least a little of most of the harnesses except those in the doors; rear harness for lights, fuel tank, & inertia switch; front harness for lights; O2 sensors; ignition switch; gauges; transmission; 4 way flashers, etc. I followed advice found on the forums and used EVERY ground wire on the remaining harnesses - didn't delete any of them. If I were to do it again, I might forego all that and buy one.

[Danthony89]

I appreciate that and any input.