Euro S50 Questions

[TerribleONE]

Hey guys, I haven't posted in the longest time but I have been undergoing a S50B32 swap into my 91' 318iS but now am stuck on some problems.

First off: My engine harness has two harness plugs, two ECU ports, and and seems like an excess of the usual wires and I was told that this is because possibly it came out of an SMG car. Has anyone read or experienced the same kind of issue?

Second: I have three connectors that come from the starter area running towards the front. Both of the two pin connectors have Red/White & a Brown wire, then the one that is a three pin connector has Green/White, Grey/Brown, and Brown. Where do these go, do I need them, and/or what should I wire them to? Here is a picture to show what I mean:


Thanks!

[DaveSmed]

Gonna guess EVAP, IAT (since your plenum isn't on), and oil level. You have the diagram for that engine?

[TerribleONE]

Oh ok cool, I forgot about the bottom of the plenum and i will check that out along with looking for the wiring diagram.

You happen to know which is for oil, and which is for EVAC? 2pin or 3pin?

[DaveSmed]

Three pin one is for oil, two for the EVAP solenoid on the control arm