Rogue wire, Can anybody ID it please.

Morning, Bought another one, anyways... Enough of that.

Theres a little white wire coming from the part of the loom that also has the small red wire that goes to the starter motor. Its a white wire with brown marks on it. Its hanging loose and i dont know what its for.

Can anybody help me out? Ive added the best pic i could get.

Thanks fellas.

think its the oil pressure sensor wire

Yes, you were right, I wired it back onto the sensor, cheers.