Unknown wire location

sicknoto · Post by **sicknoto** » 21 Jun 2021, 20:09

I recently took the engine out of my 2000 Volvo v70 and now that I am putting the engine back in I seem to have forgotten to put place one of the wires. The wire that I am having trouble with is a brown wire that is located by the starter. I cannot tell if it is a ground or power and I have no idea what it would go to. I have the starter in place and the manifold is still off.

Post by **scot850** » 21 Jun 2021, 20:11

Does it have a spade connector on it? Or does it have a round flat circular connector?

If it is the first is it the low voltage feed to the starter? There is a connector on the back of the starter near the main power cables.

A picture of the rough location might also help us here.

Neil.

sicknoto · Post by **sicknoto** » 21 Jun 2021, 20:26

It has a circular connector. When I hooked it up to a multimeter it said it had 9 volts when I had the wire on the positive end and the negative on the negative terminal of the battery.

Thanks for the help!

-Nick

Post by **scot850** » 23 Jun 2021, 17:23

Sorry, not forgotten about you, just been busy. I don't have a wiring diagram for a 2000 available but had a look at my own 2000 R. Unfortunately the Turbo has a lot more stuff in that area it is hard to see anything in there. Also when I did the PCV clean up I replaced a lot of the wiring covers with the flexi-plastic tubes so cannot see where any wire are in terms of color or location.

I had hoped someone else would jump in. There is a ground cable that runs to the front of the engine block and bolts to the block.
I don't remember the gauge/color but it uses a 12mm (?) headed short bolt around 1" in length and blots near the middle of the block low down above the oil pan.

Neil.

Post by **scot850** » 23 Jun 2021, 19:53

Come on guys someone else jump in and help here. I have seen pictures showing 3 wires connected to the starter post. 2 large red and and third smaller wire that seems to vary in color. Having read several threads on starter motors there is mention of a feed wire to the cooling fan, but the color has been seen as red, yellow, brown green.

I am now thinking this is connected to the starter terminal but can't find any wiring diagram showing this.

Neil.

Post by **abscate** » 24 Jun 2021, 03:40

I’ll have a peek at mine this morning, stay tuned

The brown colour and circular connector are consistent with a ground wire

Post by **Eddystone** » 24 Jun 2021, 04:37

(Off Topic) Abscate, I PM'd you, when you have a couple of minutes to respond.

Post by **BEJinFbk** » 24 Jun 2021, 08:13

Brown is typically a ground color in these cars.
I don’t have hands on experience with 2000’s,
but I would also suspect it belongs on a bolt.

If it is coming from a piece of wire loom, it might
be helpful to know what other wire colors are
in that section of loom.

sicknoto · Post by **sicknoto** » 24 Jun 2021, 10:33

Thank you all so much! This was very helpful!

Nick

Post by **volvolugnut** » 24 Jun 2021, 13:10

If this brown wire is a ground it would not have 9 volts when the battery cables are connected (If this is what I understand from your comment above).
volvolugnut