charging sys on 1977 Goldwing


Information and questions on GL1000 Goldwings (1975-1979)
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chet1
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Joined: Tue May 04, 2010 7:55 pm
Location: Jacksonville,IL
Motorcycle: 1977 GL1000

charging sys on 1977 Goldwing

Postby chet1 » Tue Jun 01, 2010 2:37 pm



How can i find out if my generator is charging my battery, Battery shows good ,butdoesnt seem to get charged back up .



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WingAdmin
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Re: charging sys on 1977 Goldwing

Postby WingAdmin » Tue Jun 01, 2010 3:22 pm

Disconnect the three yellow wires next to the battery (single connector with three yellow wires). Start the bike up, hold it at about 3000-3500 RPM, and check the AC (not DC!) voltage between each set of two yellow wires (a to b, b to c, c to a). The voltage on each leg should be roughly 48 volts AC.

You might want to also check that connector you disconnect to check the yellow wires - it is undersized, and with any kind of dirt, will heat up and fail. It's recommended to cut it out entirely and solder the wires directly.

chet1
Posts: 6
Joined: Tue May 04, 2010 7:55 pm
Location: Jacksonville,IL
Motorcycle: 1977 GL1000

Re: charging sys on 1977 Goldwing

Postby chet1 » Tue Jun 01, 2010 5:38 pm

Thank you, i will try your remedy tomarrow, Chet

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thrasherg
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Re: charging sys on 1977 Goldwing

Postby thrasherg » Wed Jun 02, 2010 9:48 am

Maybe I am being a bit slow, but just turn on your ignition and measure the voltage across the battery terminals, then start the engine and remeasure the voltage across the battery terminals. If the voltage increased when the engine started (should be around 12 volts without the engine running and close to 14 volts with the engine running) then the battery is being charged. Wingman's suggestion confirms the alternator is working (not the regulator), but is a complicated way to just check if the battery is being charged (your original question).

Gary




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