1985 1200 interstate


Information and questions on GL1200 Goldwings (1984-1987)
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Bbwelder
Posts: 48
Joined: Sun May 22, 2011 9:10 pm
Location: Huntsville tx
Motorcycle: 1985 gl1200

1985 1200 interstate

Postby Bbwelder » Tue Nov 15, 2011 12:48 pm



Can anyone tell me the most direct way to find out if my alternator is charging.



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virgilmobile
Posts: 7661
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: 1985 1200 interstate

Postby virgilmobile » Tue Nov 15, 2011 1:47 pm

Easiest method.Use a volt meter,preferably a digital one.
Pull the side cover,measure the "static voltage" (key off).Expect it to be around 12.2 volts.
Notice i said "around" .Static volts can vary due to temp,age and condition of the battery.
Start the bike and bring it up to 3000 rpm or so.
Were not looking for details for a quick test ,only that the voltage is climbing.
It may rise slow,but it should start going up towards 14 volts.
If that regulator is bad it could ramp up over 15 volts within 4 minutes and boil out the battery and cook it.I would guess that it may peak at 14 volts "OR SO''.
If it stays near static volts or drops,the charging circuit has failed.
As long as it is increasing above "static" volts,it's charging.
Now how well it charges and how much is another test method.
If you have to purchase the meter,a $10 DVM from Wal Mart will do.A 30 amp digital test meter can be had at Harbor Freight for about the same price to check the actual charge rate.
I found both my 1100 and 1200 charged at 15 amp for 3 minutes and then tapered off to 3.2 amp after about 5 minutes.

Bbwelder
Posts: 48
Joined: Sun May 22, 2011 9:10 pm
Location: Huntsville tx
Motorcycle: 1985 gl1200

Re: 1985 1200 interstate

Postby Bbwelder » Tue Nov 15, 2011 2:40 pm

Bought this 1200 from someone that had rigged up a bunch of lights.so I'm thinking that might be a short somewhere. Should I be able to disconnect the regulator to do a direct check of the alternator.

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virgilmobile
Posts: 7661
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: 1985 1200 interstate

Postby virgilmobile » Tue Nov 15, 2011 3:10 pm

Yes,the 3 yellow wires that plug into the regulator can be ohm and volt tested there.Here's the schematic.Also check the 3 yellow wire plug left of the battery,they tend to cook.
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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: 1985 1200 interstate

Postby WingAdmin » Tue Nov 15, 2011 3:13 pm

You should see > 48 VAC between each set of the three yellow wires coming from the stator (from 1-2, 2-3 and 3-1) when the engine is held at around 3,000 rpm. BE CAREFUL as there is potentially lethal amounts of electricity there.

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virgilmobile
Posts: 7661
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: 1985 1200 interstate

Postby virgilmobile » Tue Nov 15, 2011 4:19 pm

Adding lights to a wing of this era is a subject of great debate.
I'll only say this...Honda designed the system to run with factory equipment with very little power left over.
If you want to light it up more,you should keep in mind the extra load it will tax the system with,and may need to compensate by reducing the load of the factory lighting by retrofitting it with LED lighting.




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