m50 & m52 harness wiring

[Mr Mpower]

Hi guys! i have my m10 engine out of my 1983 318i e30 and i have the new engine in front of the car, it's a m52b28.
I have a few harness in a box, i think one is from a m50 e34 and the other is m52 e39 i think...

i dont know how can i know where i need to plug all the wires, i think for know i want to go m50 obd1 route because maybe it's easier and fast and i dont have the m52 ecu but i have the 413 red label m50 ecu.

can you give me some help?

thanks for all!

[Mr Mpower]

ok, i've found this here

oil pressure sensor BRN/GRN or BRN/GRY
front coolant temperature sensor (ECU) BRN/RED BRN
rear coolant temperature sensor (Gauge Sensor) BRN/YEL BRN/VIO
crank position sensor YEL
cam position sensor YEL RED/WHT BRN/ORG
VANOS solenoid RED/WHT GRN/BLU
knock sensor, 1-3 BLK NCA DME PIN 70
knock sensor, 4-6 BLK NCA DME PIN 69
throttle position sensor (TPS) BRN BRN/BLK RED/YEL
intake air temperature (IAT) sensor BRN GRY
idle control valve (ICV) WHT/YEL RED/WHT WHT/GRN
Evaporative emissions valve BRN RED/WHT

but i have a few questions, i dont find evaporative emissions valve and cranck sensor exactly.

now i only have three wires without name
1.white/brown white/grey white/red (maybe evaporative emissions?)
2.blue/white brown/orange blue yellow (maybe oil pan)
3.yellow black and a third wire who is like yellow or gold

and for the knock sensor i can't identifi which are 123 or 456

thanks for all!

[Wishno87]

I'm having the same issue with the knock sensor plugs.

[FredK]

Look at the DME connector.

Using a voltmeter, check continuity between pin 70 and the knock sensors. The knock sensor continuous with pin 70 is for 1-3. Pin 69 is for 4-6.

[Mr Mpower]

nice answer..thanks!!

anyone have the same colour diagram for the m52 harness?

[Wishno87]

Awesome! Thanks for that.

[Mr Mpower]

well and this is for m52 i think..m52 dont have oil pressure sensor?

throttle postition brown black red/green
idle control valve red/white white/yellow white/green
intake temp sensor grey gre/brown
evaporative emision valve red/white brown
Ecu temp sensor grey/brown brown/red
cluster temp sensor brown/yellow brown/violet
camshaft position black brown yellow
crankshaft position sensor black yellow brown/black no lo localizo
knock 1-3 yellow black
knock 4-6 green brown
carbon canister red/white/yellow green/blue