Flywheel position sensors, need some help!

[lowsodium]

I have a 87 325e i just put a new engine into. I have the 2 sensors coming off the flywheel that plug into the wiring harness on the drivers side.

Both plugs are exactly the same and im wondering how do I tell which one plugs to which female harness? Does it even matter?

[jlevie]

Yes it matters.

[Chuck C]

One of the sensors--TDC, I think--and it's corresponding connector on the engine harness, has a small wire tie near the connector. If those are missing, just plug in the sensors and see if the engine starts and runs OK. If not, reverse the connections.

[lowsodium]

Yes it matters.

I have 2 female harnesses: black and white colored. There's an upper and lower flywheel harness.

Which one goes to which harness?

[lowsodium]

Got it. Finally found it in the Bentley