I was patching up my S5 N/A harness to prep for finishing my rebuild. I'm going over all the wires, plugs, etc. to make sure I fix anything BEFORE it goes back in the car.
I've bought what I thought were two spare S5 N/A harnesses to steal good parts from. So I was in the midst of soldering on a better water thermosensor. The green rectangular two pin that sits on the back of the water pump housing.
Thankfully I noticed a difference in one of the plugs. The slot is on the opposite side.
I dug out my thermosensor and sure enough it only will fit the one with the correct notch. Unfortunately I have 3 bad ones that have the correct notch and 1 good one with the opposite notch.
What is this plug for? Was I perhaps taking from a S4 harness?