I have a 1994 f350 7.3 idi was auto , swapping to a zf5. I have a 93 parts truck that trans and everything coming out of. Would like to change out the engine harness to the 93 manual one , anyone know or have a diagram of the bulkhead wiring to see if this is possible.
Main reason being, would like to have the auto harness to swap trans into a 76 f350.
Thanks.

 

I'm sure it is possible; the actual engine wiring needed for a manual IDI is pretty simple, so you could make a custom harness if you had to.
Chances are, though, that it'll swap over just fine.

 

AFAIK 93 and 94 should be the same wiring as long as they are both IDI's.
Come to think of it, the only difference on the engine side of things would be for the TPS, and someplace is the computer for the E4OD, but I'm not 100% where that connects.

Its entirely possible the wiring is exactly the same for both, as its cheaper and easier to have just one harness that works for both. I know 2wd's (at least in 88) have all the wiring built in for 4x4, they just have a different harness for the transmission/transfer case. The dash already has all the 4x4 lights too, they just don't do anything until you connect the 4x4 wiring to the transmission connector. Come to think of it, the cruise control servo was there too, and at least some of the wiring even though that truck didn't have it (no buttons on steering wheel, not sure if the module was under the dash too?).

 

Thats cool, figure guess i may as well give it a shot, not that hard to change.