Hey guys, I been trying to figure out where this ground wire goes on my dads 2000 Volvo 770. It has a Cummins N14 celect+
The wire is coming out from the harness where it plugs into the alternator. Any help would be appreciated.
2000 Volvo 770 where does this ground wire go?
Discussion in 'Volvo Forum' started by 4vmach1, Apr 3, 2013.
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whats the wire #?
As I can see it is european alternator with brushes.
There are D+ and W outputs. Sometimes outputs are not used -
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is the light on when you ground this wire?
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if yes, this is D+ wire.
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usually it is pin on internal voltage regulator. but may be unused on some alternators
some alternators do not charge w/o D+ till you rev engine up to 1200-1300 rpm
Just an example of alternator wiring
4vmach1 Thanks this. -
Gotcha. Problem is the truck battery keeps dying over night. But the battery light doesn't come on after I use jumper cables to start it up. Alternator seems like it's running fine, but I might have to check it out with a dvm. The battery is reading 12 volts at the moment, but it just won't let the engine turn over.
edit: alternator is reading 12 volts as well. -
use clamp meter and pull fuses one by one to find what drains battery
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