Anyone want to build me a 2.9 to 4.0 wiring harness?

[Hahnsb2]

Here's a few pictures to help explain

OK here's a body connection that must be connected to the engine.

Here's the engine connection that corresponds to to wires in the body connection.

So here's the 2 connectors removed from the 2.9 and explorer harness to create an adapter.

 

[engdept]

So those 2 connectors have to be put together? If that is the case, I have an extra engine wiring harness for a 2.9 and I could make some sort of plug to go between.

Where did you put your PCM?

 

[Hahnsb2]

Stock location, with the engine removed, I pulled the HVAC box out and pulled the old harness out and installed the 4.0 harness and computer.

 

[engdept]

sweet. Other than those 2 plugs, was there any other cutting and splicing? What did you do with the 2.9 "hot in run" wires that were on the starter solenoid?

Was I correct on those 2 plugs getting put together? It looks like one has more wires on it than the other.

 

[Hahnsb2]

I couldn't tell you what wires are what now, I just now after going over the schematics they weren't needed (for me at least), a lot of dash and cruise control crap I think. Yes those 2 plugs were mated together using the old harness's plugs spliced together. For the starter I just took the whole starter and wires and simply hooked them up to existing solenoid. I'd say there were 5 or 6 plugs needed on the B2 and engine that needed to be hooked together. For the EEC and fuel pump relays and fuses I got a bit creative and used a section of the power distribution box, and wired that all up, I think what I'm going to do is grab a whole new box off of another parts sploder I have and redo it since it's kinda cheesy right now.

 

[mjonesjr]

Thanks for the info Hahns. Eng was talking about this on my Bronco II. I am in the hunt for a 4.0 donor vehicle.