help with id on a few connectors on my harness

[hugh jass]

i have an obd1 e36 325 automatic wiring harness that i'm using in my swap. there are three connectors i am having a hard time identifying

1. female connector with brn/yellow wire and brn/violet wire
2. female connector brn/gry wire
3. female connector with black wire and yellow wire. this one is by the O2 sensor plug

the only sensors on the engine i haven't identified a connector on the harness for yet are the second coolant temp sensor and the oil pressor sensor on the oil filter housing.
thanks for any help you can give.

[hugh jass]

come on guys, doesn't someone here know what these are for?

[DEV0 E30]

1. female connector with brn/yellow wire and brn/violet wire
2. female connector brn/gry wire
3. female connector with black wire and yellow wire. this one is by the O2 sensor plug

How many pins are each? 2 or 3 pin wide?

1) Oil sensor, if it's a 2 pin wide, plugs into the back of the oil filter housing. - 99% Sure.

I'd know the other two if I was home, or had the E36 Bentley in front of me. Might be on here if you search through a few pages... It's easiest if you read the wiring diagram in the E36 Bentley, so you can recheck any you aren't sure about. I have pulled my M50 3 times in the past 2 weeks, I labaled my sensors with tape the 2nd and 3rd times.

The temp sensor behind the first (closer to the back of the block) - (the 2 right next to each other) I thought had to be changed? I believe the plug that goes to it only has 1 wire. And my sensor for it only has 1 pin. If that makes sense.

[aeryk7]

one by the 02 sensor plug i believe is the e36 reverse light plug

[Rev Engineer]

I think (1) is coolant temp to instrument cluster, (2) is oil pressure (should be brn/white), (3) is probably reverse light switch. My wiring spreadsheet might help you a little more:

http://www.r3vlimited.com/board/showthread.php?t=72929&page=4

[matt]

one by the 02 sensor plug i believe is the e36 reverse light plug

Ya I think so too.

[hugh jass]

thanks guys
#1 is the for the coolant sensor for the dash gauge
#2 is for the oil pressure sensor
and based on the responses, #3 is the reverse light switch.