89 Ranger 4.0 swap wiring

[seether221]

Hello all I have performed a 4.0 swap from a 2.9 in my 89 4x4 5 speed Ranger. I have been using a 91 ranger as the donor. The motor is installed along with the 4.0 computer and the EEC harness. I've done some searching but can't find a direct answer on which truck headlight harness to use. The motor will run with the 4.0 headlight harness but Guage lights, running lights, power windows, and blower motor do not work. With the 2.9 headlight harness everything in cab works but the fuel pump does not come on and the starter does not engage. So far everything I've found is using either either bronco 2 harnesses or explorer harnesses. I haven't found ranger to ranger swap thread.

 

[seether221]

After studying a few wiring diagrams I ended up using the 2.9 harness, spliced three wires and it started right up.

 

[bobbywalter]

simple enough when you take a bit of time to look at the wiring.