1999 V70 XC - replaced my engine harness, two wires unaccounted for

meyersv70 · Post by **meyersv70** » 23 Aug 2019, 19:21

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.

Post by **scot850** » 23 Aug 2019, 23:21

Can you take a picture? It makes ID much easier.

Neil.

Post by **abscate** » 24 Aug 2019, 05:02

The ECT sensor wire runs near the alternator

The mAP and MAT sensors are near the starter on the induction path

Oil pressure sensor on the block near starter

meyersv70 · Post by **meyersv70** » 24 Aug 2019, 18:18

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

meyersv70 · Post by **meyersv70** » 24 Aug 2019, 18:37

oil pressure sensor is connected also.?

Post by **wizechatmgr** » 24 Aug 2019, 21:27

AC compressor clutch?

Post by **abscate** » 25 Aug 2019, 04:31

meyersv70 wrote: ↑24 Aug 2019, 18:18 Ect sensor is connected, map sensor is connected. Black and brown wires have metal ends with hole in the center like a ground wire.

Those would be grounds. One is on the subframe behind the radiator with an M6 bolt.

Worst case , attach to engine block.