thanks for the info. still looking for area on subframe to attach second wire.

This is a picture of the engine I am currently putting back together, I want to know where the black wire needs to be. Any comments are appreciated.

oil pressure sensor is connected also.?

Ect sensor is connected, map sensor is connected. Black and brown wires have metal ends with hole in the center like a ground wire.

Recently replaced my engine harness on my Volvo v70 xc there are two wires I can't find a connection to, ones black ones brown/ the black one is near the alternator the other is near the starter. but does not go to the starter.