looking for good wiring info...

[1991 e30 bmw 318is]

yes i did search but every diagram i find is a little off or different.

my car 1991 318is with 1993 m50b25 from an auto e36. I just removed the autobox computer so that should be fine. I have the e36 car side plug and an engine side plug from a 1990 325is that fits in my 318is (just need to move some of the pins in it to match up to the 318is) so i can make an adapter now. I just need good wiring info for it. Is the e34 plug diffent then the e36? if not I might have a good diagram to use..... or if I can just find the wiring schismatics for my 318is and the 93 325 I can make it up myself. and for the abs i know you need to put the wire to something to get power for it. if i don't hook that wire to any thing will I just not have abs? because I really don't care for having abs so that would make it easier.

[lifeiskaos]

i dont know if wiring changed between early and late model 318's but you have the same engine so i assume it's the same wiring


this is from an e34 but in my experience the wiring is the same

thats the best i feel like doing right now

[1991 e30 bmw 318is]

i don't think the 88 had an m42 tho so i think its different.....

[lifeiskaos]

oh well

[1991 e30 bmw 318is]

i have a few diagrams printed buy every one i find is a little different....

[blazing]

Jordan did a nice how to here http://www.e30tech.com/forum/showpos...5&postcount=16

[FredK]

The information in my original post was wrong. x20 pin 22 must be hooked up to a hot in start/run power source to ensure proper functionality of the diagnostic port (X6002).

[logger]

Yes, that diagram is mostly correct except do not connect C101 pin 6 to x20 pin 22.

Why not?

[madjurgen]

Fucking A. When will you people just learn to go look at the ETMs for your specific harness, motor and chassis instead of trusting random shit posted on the internet???

[lifeiskaos]

http://wedophones.com/BMWManualsLead.htm

[FredK]

Why not?

The O2 heater relay is powered through the E36 harness so it does not need separate power through the C101.

^ this above statement is true by itself, but in the context of this discussion, pulling power from C101 pin 6, which is hot in start and run, would be an appropriate way to power x20 pin 22.

[DaveSmed]

...So BMW put pin 22 in there just for the hell of it?

Those crazy Germans, at it again.

It's for the diagnostic port. (among other things not used in E30 swaps) Hook it up to make life easier in the future.

[DaveSmed]

Fuse 26

[DaveSmed]

Actually, if this doesn't reinforce the point of using the proper ETMs for YOUR swap, nothing will. For all I know, FredK's swap may have worked out that way.

[FredK]

Thanks for pointing that out. I was wrong. I will edit my posts to make sure nobody follows my erroneous information.

After a bit of research, I found that x20 pin 22 passes power from F26 to pin 16 on the diagnostic connector. It must be hooked up to a power source that is hot in start and run. So, C101 pin 6 is an appropriate source for this power. I guess my diagnostic connector isn't powered up right now!

The diagram DaveSmed posted is appropriate for a 98/99 E36. F26 powers a LOT more on the 98/99 E36, including the O2 and air pump relays, in addition to X6002 pin 16.

On the 93 E36 325i, it powers X6002 pin 16 and the reversing light switch.