Auxiliary 7 volt regulator

Information and questions on GL1000 Goldwings (1975-1979)
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Solina Dave
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Motorcycle: 1978 Honda Goldwing GL1000 (bought in fall of '77)
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Auxiliary 7 volt regulator

Post by Solina Dave » Fri Dec 26, 2014 7:23 pm

Hi everybody. Merry Christmas and a Happy New Year!!

I've owned my 1978 Honda GL1000 since the fall of '77. It's got over 650,000 kms. of great memories attached to it, so i'm also attached to it.
Help me out here! My temperature indicator hangs out in the low end all of the time, never going above the halfway point of the lower black section. Also, my fuel guage only rises to the first line marking, below the full mark, even after I have completely filled the tank.
My question is: would a defective auxiliary 12 volt/7 volt regulator be the culprit? I've read where the regulator is probably defective, if the guages are completely off scale either high or low. But, can a faulty regulator with an incorrect voltage output, cause my guages to act, partially, out of the ordinary?
Maybe my Wing just runs unusually cool, although there was a time when readings were significantly higher, and maybe my fuel float sensor is out of whack. It used to work just fine. I seems somewhat coincidental that both features would act up at the same time. Who knows?

Any help would be welcome................Dave

My 1978 Honda Goldwing GL1000
My 1978 Honda Goldwing GL1000

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Re: Auxiliary 7 volt regulator

Post by MikeB » Fri Dec 26, 2014 10:46 pm

Read up on it a bit here ---> viewtopic.php?f=9&t=141#p319
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Re: Auxiliary 7 volt regulator

Post by WingAdmin » Sat Dec 27, 2014 12:28 pm

If both gauges are operating incorrectly then yes, it's a fair guess that the 7 volt regulator is the cause. If you open the side compartment and measure the voltage being put out by the regulator, you'll know for sure: I'm guessing you're going to be seeing less than 7 volts being produced. See: ... ulator.asp

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