Need wiring harness for EFI Magnum

autopar3000 said

That's what I was thinking. I sure don't need the harness for the old orange box, so thinking I should get the cheaper one without the electronic ignition wiring. I just didn't know if there was something else on the elec harness that I might need for EFI.

The 94 engine is indeed OBD1, and I might upgrade it to OBD2 at some point, but for right now I just want to get it in the car and get it running! Besides, I would need to source a new computer and I believe some sensors are different.

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I built and ran mine in 3 stages and am planning a 4th version of the Magnum soon. All 4 will use the same ECM which was remote tuned by Chris at Performance Injection Equiptment. He knows his stuff, and is a great guy to work with.

https://www.performanceinjectionequipment.com/

The throttle body has 3 of the sensors on it, and used ones are everywhere for cheap. I also changed the injector harness to use a different plugs.

I used Solo PCM in Florida. They sold me an ECM for a 1999 stick shift 5.9 Magnum pick-up without the key security for a very reasonable price, which I can''t recall now. I didn't need a transmission control module , as I'm running a modified 2004R transmission from Extreme Automatics. It's the best automatic I've ever driven.