Need help bad!!!!


Information and questions on GL1000 Goldwings (1975-1979)
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Welch.cooper
Posts: 2
Joined: Sat May 21, 2011 8:34 pm
Location: Weatherford, TX
Motorcycle: 1076 Honda GL1000

Need help bad!!!!

Postby Welch.cooper » Sat May 21, 2011 8:56 pm



Just bought a 76 gl1000 with "electrical problems" I've got it figured out but not sure where to start fixing it. My problem is the battery won't keep itself charged. I'll charge the battery it'll crank and run but everything is running strait of the battery so it won't keep a charge. What makes the battery recharge itself, where is it located and how do I fix it. Any input helps thank you.



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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: Need help bad!!!!

Postby virgilmobile » Sun May 22, 2011 11:41 am

Basically the gl1000 uses a 3 wire ac generator called the stator.The 3 wires are yellow and are next to the battery.At 2500 rpm the stator will produce about 45 volts AC between any pair of yellow wires,NOT ground.If it still has a 3 prong plug on it,cut it off and hard wire it direct.The plug will overheat and corrode.The 3 yellow wires go directly to the rectifier block,green is ground,2 red wires go directly to the battery(no fuse).There is a regulator.3 wires,Yellow from the stator,green ground and black switched ignition. The most common fail point is the stator plug first,corroded grounds second,burned up diodes/regulator third.There are test procedures for each.Battery volts should start around 12.5 volt at 1500 rpm and reach near 14.5 vdc near 3500 rpm.I've added the schematic below.If you get stuck,let us know.We'll step you through it.
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DragonRider
Posts: 136
Joined: Thu May 19, 2011 11:11 am
Location: Ocala, FL
Motorcycle: 1982 and 1983 GL1100 Aspencades

Re: Need help bad!!!!

Postby DragonRider » Mon May 23, 2011 2:04 pm

Basicly if you want to keep battery charged you need to have engine running, the Stator is on the back of the engine and if it is bad it requires pulling the engine to change.
look near battery you should see a plug with three yellow wires cut those wires and solder them together, now be careful you only want to solder 1 wire at a time (not all in one big mass).
If bike is not running you can leave a battery charger hooked up and if it is strong enough it will give you power to fix light and such.
Another trick is to simply use a car battery, take battery out of car and place it on wood blocks near bike and connect battery cables to it. Car battery will last a bit longer giving you more time to work.

Welch.cooper
Posts: 2
Joined: Sat May 21, 2011 8:34 pm
Location: Weatherford, TX
Motorcycle: 1076 Honda GL1000

Re: Need help bad!!!!

Postby Welch.cooper » Tue May 24, 2011 7:49 am

Thanks for all the help guys, I rely apprecite it and I think we are headed in the right direction now. I finally got to drive the bike home from my shop yesterday evening and thought the problem wa fixed unfortunately I'm back to the same problem this morning luckily I'm not far from the house so I've got a trailer on the way :) any other ideas on what th problem might be? The battery is testing good and showing tht it takes a charge so idk if it is that or not. Again all information is greatly appreciated.

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dingdong
Posts: 2864
Joined: Thu Apr 08, 2010 8:35 am
Location: Oklahoma City
Motorcycle: 1976 gl1000
1993 gl1500
2004 NRX1800 Rune

Re: Need help bad!!!!

Postby dingdong » Tue May 24, 2011 9:17 am

What have you done to this point that you thought the problem might be fixed? Still sounds like a bad stator or a connector problem. Check your voltage at the battery. At idle it will show around 12 volts if you don't have any extra lighting. At 2500 rpm it should show about 14.5 volts. Do the checks that Virgilmobile suggested.
Tom

A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

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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: Need help bad!!!!

Postby virgilmobile » Tue May 24, 2011 3:06 pm

2 possibilities.Either it's not charging or the battery is being drained overnight.A amp meter inserted in this fashion will show the charge/discharge rate.If you do this test,use large wire(eg #10)and keep them short(under a foot).Hook it up and turn on the key,it should show a discharge.If it swings toward the "+" side just reverse the wires on the meter.
Normal charging should be something like this...gl1000..

idle(950 rpm) Barely enough to move the needle,even a discharge is OK
1500 rpm.1-5 amp,12.5-13 volts..(kinda hard to see)
2500 rpm.3-8 amp,12.8-13.8 volts
3500 rpm.3-20 amp 13.2-14.5 volts

The wide range will be due to the state of charge of the battery and the bikes electrical needs.
A bad regulator/rectifier can discharge a battery with the key off and still appear to charge OK.
If the regulator/rectifier is bad and cannot be found,one from a gl1100 can be wired in it's place.
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DragonRider
Posts: 136
Joined: Thu May 19, 2011 11:11 am
Location: Ocala, FL
Motorcycle: 1982 and 1983 GL1100 Aspencades

Re: Need help bad!!!!

Postby DragonRider » Tue May 24, 2011 7:06 pm

Are the three stator wires "hardwired" together? if they are still in a plug in type connector you could be having a problem right there.
Also the old Dogbone main fuse tends to have problems and should be upgraded to a modern blade type fuse.
are all battery connections good and cleaned? this means the ground at the engine block as well as positive running to selenoid and then to starter.

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Fred Camper
Posts: 1155
Joined: Sun Aug 16, 2009 9:15 pm
Location: Metro Detroit, MI
Motorcycle: 1977 GL1000, 1976 LTD GL1000

Re: Need help bad!!!!

Postby Fred Camper » Tue May 24, 2011 9:30 pm

If your regulator or rectifier turns out to be bad, you can search on advice to switch over to a newer Honda MOFSET combination regulator/rectifier that mounts in the stock regulator location and is a one for one wire swap. Need to know more about what you tried, lots of solid advice above.




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