GL 1200 not charging


Information and questions on GL1200 Goldwings (1984-1987)
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nevada4419
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GL 1200 not charging

Postby nevada4419 » Sat Jul 12, 2014 7:40 pm



My GL 1200 Interstate is not charging. The yellow 3 wire plug by the battery looks ok. Are the any fuses I should check or meter checks I can do? Is it like a car alternator that requires a hot lead to excite the stator? Thanks for help.



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WingAdmin
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Re: GL 1200 not charging

Postby WingAdmin » Mon Jul 14, 2014 3:20 pm

nevada4419 wrote:My GL 1200 Interstate is not charging. The yellow 3 wire plug by the battery looks ok. Are the any fuses I should check or meter checks I can do? Is it like a car alternator that requires a hot lead to excite the stator? Thanks for help.


It is not an alternator, it does not have a field coil that needs exciting. It is just some coils of wire and spinning magnets.

Unplug the yellow 3 wire plug, and with a meter set to AC Volts, measure each of the three legs of the yellow wires: A to B, B to C, C to A. With the engine at 3,000 RPM or so, you should see at least 48 VAC on each leg. Be careful, as there can be a dangerous amount of power there - don't grab onto it with your fingers.

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virgilmobile
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Re: GL 1200 not charging

Postby virgilmobile » Mon Jul 14, 2014 4:18 pm

There is a "get it working" kinda wire.
Its a black switched 12 volt wire that feeds the regulator module.
The plug also has the stator wires(3 yellow),2 hot wires(red),2 ground(green) wires.
Inspect for corrosion.
The module lives to the left of the air cleaner under the shelter.

nevada4419
Posts: 28
Joined: Sat Jul 12, 2014 9:06 am
Location: Pahrump, Nevada
Motorcycle: 1984 gl 1200

Re: GL 1200 not charging

Postby nevada4419 » Mon Jul 14, 2014 5:12 pm

Thanks so much for the help. There is an 8 wire plug to the regulator/rectifier and is the black switched 12 volt wire one of those? Should that black wire be hot with the ignition switch on? I’m getting no ac voltage at all from the 3 yellow wires. I will disconnect the 8 wire plug tomorrow and check for corrosion. Do you think my problem could be the regulator/rectifier? The system was working fine and the problem happened very suddenly.

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virgilmobile
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Re: GL 1200 not charging

Postby virgilmobile » Mon Jul 14, 2014 8:53 pm

The black wire should have 12 volts with the switch on.
The AC is measured with the 3 yellow wires unplugged from the harness by the battery and measured between any 2 yellow wires while the engine is running.
Do not measure for AC to ground.Only between any 2 pairs.

nevada4419
Posts: 28
Joined: Sat Jul 12, 2014 9:06 am
Location: Pahrump, Nevada
Motorcycle: 1984 gl 1200

Re: GL 1200 not charging

Postby nevada4419 » Tue Jul 15, 2014 9:54 am

I disconnected the 8 wire plug at the rectifier and cleaned (not much corrosion). I checked voltage at the black wire with switch on and got 12 volts. I reassembled and checked for ac voltage with engine running and got 20, 20 and zero. Unless there is something else to check the stator is bad. Thanks for the help

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virgilmobile
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Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
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82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: GL 1200 not charging

Postby virgilmobile » Tue Jul 15, 2014 11:21 am

20,20 and zero at the r/r module is not good.
Move to the 3 yellow wires to the left of the battery.There is a plug there too.inspect it or at least check volts or continuity of the 3 wires/coils.
If the plug is ok but one coil (pair of yellow wires) is open you've verified the stator is bad.




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