91 GL1500 charging issue.

Information and questions on GL1500 Goldwings (1988-2000)
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Posts: 1
Joined: Fri Sep 22, 2023 8:30 am
Location: Scotland
Motorcycle: 1991 GL1500 SE

91 GL1500 charging issue.

Post by wn33 »

I have a 91 GL1500 with a charging problem. I have fitted a new Yuasa HD battery and a new Honda alternator but still the issue persists. Works perfect on start up charging around 13.9 whilst on choke then around 11.9 at idle @ 850. Once the bike starts warming up the charge rate drops. Struggling to get 12 with revs and at idle it drops like a stone till the bike cuts out and then the battery is flat. Dog bone and battery connections all good. Obviously a heat related issue. Both fans work as they should. Ive checked the earth by the thermo switch and all ok. Any ideas much appreciated. Thanks.

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Motorcycle: 1992 GL1500 Aspencade
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Re: 91 GL1500 charging issue.

Post by Rambozo »

Have you measured charging voltage right at the alternator output terminal?
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