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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 04-24-2016, 08:44 AM   #1
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Join Date: Sep 2012
Location: Deutschland
Posts: 2
My Ride: 2000 318iL
2000 318i Alternator wire harness

So I, er, I mean my stupid friend had the most of the engine wiring harness disconnected to replace the head gasket and also remove the alternator to change the o-ring on the oil filter mount - and didn't mark the wires (I guess I was hoping they were uniquely keyed somehow). So I'm now - several months later - trying to figure out which 3 plug connector belongs to the alternator; according to Haynes it's the one with a Blue, Green/Brown and Red wires. My three 3-wire connectors are:

1. Blue, Green (only 2 wires)
2. Red/White, Brown/Green, Brown
3. Brown/Violet, Gray/White, Brown/Black

Since they all run back into the big loom I haven't had much luck (or spent much time) trying to see if one of the wires from one of the connectors goes to the starter - trying to avoid further disassembly at this stage.

Any guesses which one is correct?

And thank you!
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