65bluestang

i bought a fuel injection harness out of a t-bird today, when i pulled it out of the firewall, someone prior to me had cut some wires. now i am wondering if they are needed and what they go to. only 2 wires out of the cut ones go to the cpu, the rest to the main wires. does anyone have a wiring diagram that tell me where they go? it is for my conversion project and if i dont need them i will just cut them out but if they are needed i need to go get another harness. do the t-birds and mustange have the same harness and just different cpu's? please help!!

ZachW04Stang

I'm guessing there are 6 wires cut total? I had had to cut 4 wires that went from the harness to the fuel pump relay when I removed my harness. Maybe the other 2 got cut by accident when cutting the ones that went to the fuel pump relay.

65bluestang

it is 9 wires, red, black,yellow, red/green, blk/orangex2, blk/yellow, brn/grn, and lt brn/green. please guys help.

PONY GUY

Youshould look into a painless wiring harness they make them for about any car now and would be alot safer than a hacked up harness from a doner car

fordboyyfm

i would try to find a wiring diagram and see what they are for.

65bluestang

i found what the ones that go into the eec are, but im working on the others, i dont have a t bird and i dont want ot buy a manual.

65bluestang

the bird was an 88 i foind out, also with that i seem to have gotten the wrong harness. speed density. is that ok will it work the same as mag,? can it be made better?

fordboyyfm

well, is your car a mas air car or speed density, if it isnt speed density then the harness is no good to you.

ZachW04Stang

Well it sounds like your converting a 65 mustang to efi right? A speed density computer will work but your pretty limited to a stock cam or an isky cam made for speed density. If you get a chiltons manual for a 88 tbird it will have all the wiring diagrams. Later tonight I'll check what color the fuel pump relay wire colors are.

65bluestang

yea i am converting to efi, so if im going to do it maf is the way to go, more options?