1985 GL1200 Ltd


Information and questions on GL1200 Goldwings (1984-1987)
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gg125067
Posts: 7
Joined: Sun Aug 30, 2009 4:42 pm
Location: Aurora, IL
Motorcycle: 1985 GL1200 Ltd
1983 VT500 Shadow
1985 VT350 Yamaha

1985 GL1200 Ltd

Postby gg125067 » Sun Aug 30, 2009 5:37 pm



I am having charging problem with my cycle. I have replaced the plug both sides with a kit from the stator. I have also replaced the rectifier/regulator assy. What I am trying to determine is the dynamic voltage that should be across the three stator pairs minimum. At 3000 rpm I have 70 vac currently. I have a couple things I can’t find:
1. There are 2 ground lugs shown on the schematic (eyelets), where are they physical located? I have a 84 mv. drop from frame to regulator ground.
2. Where can I find the charge troubleshooting section for the Ltd Electrical troubleshooting manual?



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WingAdmin
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Posts: 17045
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: 1985 GL1200 Ltd

Postby WingAdmin » Mon Aug 31, 2009 12:29 pm

gg125067 wrote:I am having charging problem with my cycle. I have replaced the plug both sides with a kit from the stator. I have also replaced the rectifier/regulator assy. What I am trying to determine is the dynamic voltage that should be across the three stator pairs minimum. At 3000 rpm I have 70 vac currently. I have a couple things I can’t find:

1. There are 2 ground lugs shown on the schematic (eyelets), where are they physical located? I have a 84 mv. drop from frame to regulator ground.

2. Where can I find the charge troubleshooting section for the Ltd Electrical troubleshooting manual?


70 vac across each pair is just about perfect. On my 1100, the main ground is a chromed bolt on the frame, on the left side near the regulator. What voltage are you measuring at the battery when the bike is running at 3000 RPM?

It does not hurt, at all, to run a second ground from the regulator to the negative battery post. In fact, it's a recommended way to get rid of stator noise in the intercom. Splice both green wires coming from the regulator and run the splice directly to the negative battery post. That should negate any drop, and ensure your regulator is regulating against the correct ground baseline.

gg125067
Posts: 7
Joined: Sun Aug 30, 2009 4:42 pm
Location: Aurora, IL
Motorcycle: 1985 GL1200 Ltd
1983 VT500 Shadow
1985 VT350 Yamaha

Re: 1985 GL1200 Ltd

Postby gg125067 » Wed Sep 02, 2009 6:29 pm

At the battery I always measured less than 11.8 VDC, maximum reading. At the regulator the red & black leads read the same. Unplugged the stator from the electrical system and Dynamical checked the stator with a 100 watt light bulb and at the same time had a meter across the same pair; found I never had less than 70 VAC even with the load at 3000 RPMs. Finally reinstalled the old regulator and found every thing measure correctly now. The new regulator is bad and it has been sent back. Now the black lead equals 14.3 and the red leads equal 14.8. The dash reading is now 14.3.

User avatar
WingAdmin
Site Admin
Posts: 17045
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: 1985 GL1200 Ltd

Postby WingAdmin » Wed Sep 02, 2009 7:40 pm

Sounds like you have found the source of your problem. If you haven't replaced the stator plug by soldering the wires directly, keep a close eye on that plug.

gg125067
Posts: 7
Joined: Sun Aug 30, 2009 4:42 pm
Location: Aurora, IL
Motorcycle: 1985 GL1200 Ltd
1983 VT500 Shadow
1985 VT350 Yamaha

Re: 1985 GL1200 Ltd

Postby gg125067 » Wed Sep 02, 2009 8:28 pm

Just replaced the plug assembly both sides with a kit.




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