engine electrical connection

[NC325iC]

well ive got the new engine in so i have begun to hook everything back up.
during removal i made the mistake of not labeling the wires so now i have 4 of the same connector and cant tell which one goes where. i was wondering if there was someway to check, perhaps a continuity test with certain pins on the ecu plug? any help would be good
thanks

[rs4pro3]

Pull back the rubber boots, and find the wire colors. Then look in the ETM for what plug it is or post the wire colors up here.

[NC325iC]

sorry for ignorance but wtf is ETM

[rs4pro3]

Electrical trouble shooting manual. You can get copies off ebay or buy a bound set from the dealership. Has any and all wiring info you will ever need for your car :)

[NC325iC]

right i recon thatll be in the full set of manuals my grandpa has from BMW from back when he got his e30 some 15-2X years ago

[rs4pro3]

Probally, every year e30 has little differences in wiring. The Ebay ones have the ETK and other CD's and are $30 where as I paid $65 Friday for the factory bound one for my 81 633csi(CD's don't go that far back)

[NC325iC]

which wire goes where on the starter
black and green
black and yellow
red
black(from battery)

4 posts on the starter

what are the colors of the wires for the
TPS
reference sensor
sensor on spark plug wire
idle air valve or something

[NC325iC]

hello

[rs4pro3]

Starter
black and green-8mm nut(top I believe
black and yellow-10mm nut(bottom I belive)
red-13mm nut
black(from battery)-same 13mm nut the one that is closest to the brake booster and dosn't have the braided cable.

TPS-Brown/ Brown-Blue/ Brown-Black
reference sensor-see below
sensor on spark plug wire- Both these are the same color but not interchangable. Do you have the Diagnostic bracket they bolt slide into?
idle air valve or something Red-white/ White-yellow/ White-Green

[NC325iC]

yeah i have the bracket

[rs4pro3]

Ok if you look at the bracket you will notice that the plugs only go one way, Your wiring should have a natural bend where it attaches. Move the wiring till the bend looks like, then Grab the 2 wires from the Crank sensor, and Spark plug wire. These 2 should have a natural bend, just line it all up and plug in. IF the car won't start swap them around.

[NC325iC]

thanks for all the help
ill let you know

[NC325iC]

fired it up today
thanks alot for the help

[rs4pro3]

no problem, glad I could help.