Questions on E36 chassis wiring

[MR 325]

Went to the junkyard today to snip some E36 chassis side engine harness connectors and notices that it has two. I am planning on making my own 24v conversion adapter and am wondering why the E36 has 2 plugs on the chassis side. Sorry if this post is confusing. Any info would be appreciated.

[PiercedE30]

diagnostic plug probably.....let me check out an e36 at work to confirm it (in the morning)....

[tonytony]

when i went to get the plugs from the e36 there was the diagnostics plug and then there was two plugs next to the fuse box, possibly for the autotranny. I just went ahead and took the one with the most pins in it.

[EtaSport]

when i went to get the plugs from the e36 there was the diagnostics plug and then there was two plugs next to the fuse box, possibly for the autotranny. I just went ahead and took the one with the most pins in it.

sounds like auto trans to me. im pretty sure the connectors are the same. i saved mine in case i need to make another one someday. ive got the connector tools.

[matt]

OBDII cars have 2 plugs.

[Beej '86 325es]

I've got my wire harness layed out on a table right now and I'm trying to identify all of the plugs, working through it slowly. I think I'm going to take a hi-res photo of it all sprawled out, and try and identify what I can. The rest I'll ask for help on, but it would be a usefull tool for others later. I'll try and do that tonight or early next week.

[MR 325]

OBDII cars have 2 plugs.

These were both OBD1.

[BDSax]

was it a auto tranny?? if it was then it was the connector for the transmission, they look the same.

[tonytony]

These were both OBD1.

i got mine out of a 92 also

[golde30]

yeah matt, i got an s50 from an auto tranny car, and it has 2 of those plugs also...

[matt]

Weird.

Oh well. You don't really need the e36 connector anyway. The new hotness is putting the M20 motor plug straight on the e36 harness.

[MR 325]

I honestly did not even pay attention to what tranny either car had, but that makes sense because they do look the same, just less pins. I grabbed all of them anyway so no biggie.

Matt, I prefer a plug and play adapter that way my engine harness stays intact and my chassis harness stays intact. No modifications to either. :)

Now to find the wiring chart for this adapter, I know it's gotta be here somewhere on this damn site, lol.

[golde30]

Now to find the wiring chart for this adapter, I know it's gotta be here somewhere on this damn site, lol.

word. let me know if you find it. im also searching for that damn wiring diagram...