84 GL1200 wiring


Information and questions on GL1200 Goldwings (1984-1987)
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Tercules
Posts: 7
Joined: Fri Nov 06, 2009 5:12 pm
Location: Phoenix
Motorcycle: 1984 GL1200 Aspencade

84 GL1200 wiring

Postby Tercules » Thu Sep 02, 2010 10:09 am



Hello all, recently my gas and temp guage and headlight has been malfunctioning. While crusing one day I noticed my gas guage went to full (wasnt full) and my temp guage maxed out along with it, about 20 miles down the road they went back to their normal possitions. Then the next day I noticed my headlight was out and the guages were all the way up again and now stay this way all the time.

Has anybody else had this same problem? I am really not a wiring expert and do not want to pay the shop hundreds of dollars to find the problem.

Any help would be awesome
Thank You
Tercules



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WingAdmin
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Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: 84 GL1200 wiring

Postby WingAdmin » Thu Sep 02, 2010 10:59 am

Do you have a digital dash? I assume you do, being that you say you have an 84 Aspencade, but I ask simply because this is a problem known with the old analog fuel/temp gauges on 1000's, 1100's and early 1200's.

Tercules
Posts: 7
Joined: Fri Nov 06, 2009 5:12 pm
Location: Phoenix
Motorcycle: 1984 GL1200 Aspencade

Re: 84 GL1200 wiring

Postby Tercules » Thu Sep 02, 2010 11:08 am

Yes its a digital guage. I am asking because I am hoping it's just what happens when your headlight or a simple fuse goes out and it's happened to someone else before.
Thanks Tercules

piehl67
Posts: 15
Joined: Mon Jul 19, 2010 9:24 pm
Location: bluffton, oh
Motorcycle: 1984 gl1200 aspencade

Re: 84 GL1200 wiring

Postby piehl67 » Fri Sep 10, 2010 7:32 pm

my dad has an 84 aspencade also and had his fuel gauge go to empty when it wasnt an all that was wrong with his was a pinched wire under the seat where the seat slides... might want to look there

Tercules
Posts: 7
Joined: Fri Nov 06, 2009 5:12 pm
Location: Phoenix
Motorcycle: 1984 GL1200 Aspencade

Re: 84 GL1200 wiring

Postby Tercules » Thu Sep 23, 2010 12:18 pm

Well so far I have removed the headlight and checked the bulb and cleaned all connectors and put it back together, I have removed the seat and tank cover and found all the connectors for the rectifer/regulater and found only a discolorization on one of the yellow wired inside the big connector on the rectifier. I cleaned all connectors I found in the area and I only found one ground that was where the rectifier bolts the frame, I cleaned that connection with a wire brush. I also inspected and cleaned the connections next to the battery. All to no avail. I still have no headlight and my fuel and temp gauge is pegged all the way up. I guess I need to buy a volt meter next and test the rectifer/regulator. Anything else I can check?

Tercules
Posts: 7
Joined: Fri Nov 06, 2009 5:12 pm
Location: Phoenix
Motorcycle: 1984 GL1200 Aspencade

Re: 84 GL1200 wiring

Postby Tercules » Thu Sep 23, 2010 12:22 pm

I wonder if my dash guages and my headlight ground wire would all be on the same ground. The wiring diagram I have is for the birds. I can't make out the grounds.

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thrasherg
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Re: 84 GL1200 wiring

Postby thrasherg » Thu Sep 23, 2010 1:53 pm

I am not 100% sure, but the fuel and temp gauges usually work of a regulated supply (around 7 or 8 volts). If both gauges are reading high, I would suspect the regulator has gone bad (This is not the regulator on the alternator, but a second regulator that feeds these 2 gauges) and would have nothing to do with the headlight not working!! You need to look at the wiring for your model, or someone else might confirm if I am smoking something.. But I suspect a bad 8 volt regulator and it's just coincedence that the headlight stopped working..

Gary

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WingAdmin
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Posts: 17046
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: 84 GL1200 wiring

Postby WingAdmin » Thu Sep 23, 2010 2:30 pm

The digital dash Wings don't use that separate 7 volt regulator, they drive the sensors directly off the computer that runs the dash.

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tricky
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Location: Canada

Re: 84 GL1200 wiring

Postby tricky » Thu Sep 23, 2010 4:41 pm

Although I have never had reason to poke around in that area yet, the manual sure states it has. It doesnt differentiate between the Interstate or Aspencade in the manual.
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WingAdmin
Site Admin
Posts: 17046
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: 84 GL1200 wiring

Postby WingAdmin » Fri Sep 24, 2010 9:05 am

Interesting. My 1200 service manual does not show the 7 volt regulator on that page:

1200 LCD Meter
1200 LCD Meter


In fact, my 1200 service manual does not mention the 7 volt regulator anywhere.

The equivalent 1200 Electrical Troubleshooting Manual shows no 7 volt regulator either - the gauges themselves have integral voltage stabilizers, and run directly off +12V:

1200 Fuel-Temp Schematic
1200 Fuel-Temp Schematic


This jives with what I believe - the 7 volt regulator exists only in the 1984 1200 Standard, which had basically the same analog instrument cluster as the non-LCD 1100 - which includes the 7 volt regulator to drive the gauges.

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tricky
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Location: Canada

Re: 84 GL1200 wiring

Postby tricky » Fri Sep 24, 2010 11:00 am

My Honda manual is for the 84 and 85 gl's not ltd




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