Information and questions on GL1200 Goldwings (1984-1987)
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Posts: 1
Joined: Sun Aug 04, 2013 10:23 pm
Location: Cedar Rapids, Iowa
Motorcycle: 1985 GL1200A ASPENCADE


Post by isujcook » Sun Aug 04, 2013 10:31 pm

Hi, I am a new owner of a 1985 GL1200 A I just purchased this bike and am having charging issues. I have removed the white connector and soldiered the wires together and am getting 12.5 volts at the battery at 3200rpms. The bike only has 13000 miles on it and I love riding this bike. I have heard of stator problems but at this low mileage can that be the case? I am open to suggestions. I am a mechanic and am willing to try anything please help.

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Posts: 7968
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
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78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I


Post by virgilmobile » Mon Aug 05, 2013 9:45 am

The voltage at 3500 rpm,assuming the battery is OK and all connections have been cleaned,Is low.
Mine would run right at 14.2 volts on the battery.
There's only 2 parts involved here.The stator and recitfier/regulator module.
Either or both could be bad,including corrosion at the regulator plug.
There are tests(ohms and volts) for the 3 yellow wires.Volts are measured between each pair,not to ground.
It's a 3 phase alternator that produces around 25 volts AC between any 2 pair of wires at 1000 rpm.
Unplug the regulator and test there.
There should be NO continuity to ground from the yellow wires.
If its OK,replace the regulator module.

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