can i use an automatic wiring harness?

[haaken675]

I am trying to figure out the wiring part, and so far I haven't come up with an answer to if I can use an automatic harness, or if I have to find one from a manual e36. I might have missed it as most of my searching is between appointments and calls at work though...

Also, I have an m52, I need to have a harness from an m52 car, correct?

[nando]

Yes. It's a little more work since you have the extra connector and wires, but they can all be removed.

if you are staying OBD2 (recommended), then yes you need the M52 harness.

[haaken675]

I do plan on staying OBD2 as I think my tuning options will be greater with the ms41.1 and I like the idea of having knock sensors. I plan on deleting all of the emmisions garbage from the motor...

So if I get an auto harness I just need to clip and cap off some portions of the wiring? All of the harnesses I can find online are either from an auto car or not listed either way...

[nando]

you can cut them, or you can remove the pins from the main harness connector and pull all the wires out completely. That's my preference.

[haaken675]

Perfect!

[ADEN]

That's what i will be doing using the auto harness and delete auto wires. thank you all. Everyday you made me more confident going into my 24v swap

[Klug]

I used an auto s52 harness for mine, works fine just needed to clean up the unnecessary wires.

[M3PO]

My S50 (note this is for OBD1, dunno if OBD2 is different) was originally an auto. I cut out everything that was attached to the auto computer plug. A few wires went to the DME and I just heat shrinked the cut ends.

[ADEN]

My S50 (note this is for OBD1, dunno if OBD2 is different) was originally an auto. I cut out everything that was attached to the auto computer plug. A few wires went to the DME and I just heat shrinked the cut ends.

what wires did you exactly connect to DME? and why?

[M3PO]

what wires did you exactly connect to DME? and why?

I didn't connect anything to the DME. There were a few wires that went from the auto trans plug directly to the DME. So when I cut out everything that was attached to the auto trans plug, I was left with those few wires. I simply capped them off so they wouldn't short.