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post #2 of (permalink) Old 04-24-2007, 11:17 AM
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Dianna's Avatar
Join Date: Jun 2004
Location: Conway, AR
Posts: 1,998
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You may want to do a stator wire (ohms) test on the warmed up bike
Unplug and test the three yellow stator wires;
they should be .34 to .52 ohms between any
combination of the yellow wires, with no shorts to
If it is a stator going bad, I think you may find you have a short to ground on one of the three wires.
That is how I found mine. Bike would charge fine until it got warmed up. All the tests were good or a little off on a cold bike, but a different story once it was warmed up (usually about 5 miles down the road)

As far as the R/R test it should be as follows
Quoted from the manual as much as possible:

Regulator/Rectifier Inspection

Remove the left side cover.
Pull out the connector.
Be sure to set the hand tester to the 100 ohm range and zero
the meter(Not necessary on a digital meter)
Check the resistance between the regulator/rectifier terminals
as follows(there is a chart and picture in the manual which I
cannot reproduce right now but I will try to put it in words
for you)

A1 A2 A3 All Alternator Terminals
--- --- ---
Connector with pins facing
you and notch at bottom
--- --- ---
G M B G = Ground M = Monitor B = Battery


(Hope that came across right)

Measure B to M - should read infinity
Measure B to G - should read infinity
Measure B to A1, A2, A3 - should read infinity
Measure M to B - should read > 10K ohm
Measure M to G - should read > 10K ohm
Measure M to A1, A2, A3 - should read > 10K ohm
Measure G to B - should read between 0.4 to 2K ohm
Measure G to M - should read between 1 to 5K ohm
Measure G to A1, A2, A3 - should read 0.2 to 0.6K ohm(200 to 600 ohm)
Measure A1, A2, A3 to B - should read 0.2 to 0.6K ohm(200 to 600 ohm)
Measure A1, A2, A3 to M - should read infinity
Measure A1, A2, A3 to G - should read infinity

If there is more resistance than the specified value, the unit has an
open lead and must be replaced. Much less than this resistance means
the unit is shorted, and must be replaced.

Hope this helps someone out there.

Dan Morgan
2K VN750
VROC #9566
Altus, OK

If both of these check out ok then it could be a short somewhere else. Under the seat or along the front neck areas are usually prime suspect areas since wires tend to rub a bit there.

Hate to sound pessimistic but.. my stator on my 2000 shorted to ground at about the same mileage.

Conway, AR
Patriot Guard Rider
2000 VN750 Sere (Serendipity)
1990 GL1500 (Ole Blue)
1986 VN750 EVie (project bike, heavy custom)
VROC # 11628 / 25000-H
ARVROC # 12 Coordinator and Crowd Control
OKVROC # 18 (H)
TNVROC # 45 (H)
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