Alternator @14.4-Battery @12.1


Information and questions on GL1500 Goldwings (1988-2000)
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Blackngold
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Motorcycle: 1998 GL1500 SE

Alternator @14.4-Battery @12.1

Postby Blackngold » Sat Dec 05, 2015 11:24 am



I just replaced my alt. on'98 1500 se (second time in 2 years, nothing extra drawing amps.) and am getting 14.44 v to ground. went over to new battery and only got 12.11 v. Any explanations or recommendations? I'm pretty sure I should be getting same or close to same volt. at battery as at alt. Battery was fully charged b4 putting it in.THX IN ADVANCE!



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virgilmobile
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Re: Alternator @14.4-Battery @12.1

Postby virgilmobile » Sat Dec 05, 2015 3:26 pm

I think that if you follow the wire from the alternator over to the battery,you may find a 55 amp dogbone fuse.As I recall,its right next to the battery.Measure the volts on both terminals.If its bad,you will see the 14 volts from the alternator and the 12 volts from the battery.

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Blackngold
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Re: Alternator @14.4-Battery @12.1

Postby Blackngold » Sat Dec 05, 2015 9:43 pm

thx! will ck in AM..

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Bluewaterhooker0
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Re: Alternator @14.4-Battery @12.1

Postby Bluewaterhooker0 » Sun Dec 06, 2015 12:53 pm

You may want to just check that fuse first. It's not good to run the alternator without a battery connected.
Based on this '94 drawing, the electric seems to go directly from the alternator, to the dogbone fuse as stated, then to the start relay A, where it then jumps over to the battery + terminal. Check continuity between all that before starting. Since the bike starts, it would appear the battery to start relay connection is good. The break should be before that.

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Blackngold
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Re: Alternator @14.4-Battery @12.1

Postby Blackngold » Mon Dec 07, 2015 8:06 am

It was the dogbone fuse probably happened when removing old alt. It arced cause I forgot to unhook the old battery first. DUH :oops:

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Blackngold
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Re: Alternator @14.4-Battery @12.1

Postby Blackngold » Mon Dec 07, 2015 8:08 am

Getting 14.3 volts at batt. now thx all

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Bluewaterhooker0
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Re: Alternator @14.4-Battery @12.1

Postby Bluewaterhooker0 » Mon Dec 07, 2015 9:45 am

How cool is that ? Don't you love an easy fix ?
:D

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NVSB4
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Re: Alternator @14.4-Battery @12.1

Postby NVSB4 » Mon Dec 07, 2015 10:17 am

Blackngold wrote:It was the dogbone fuse probably happened when removing old alt.


Was it obvious when looking at the fuse?
The dogbones can get tiny hairline cracks that you almost can't see and don't affect until hot.
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Blackngold
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Re: Alternator @14.4-Battery @12.1

Postby Blackngold » Wed Dec 09, 2015 2:45 pm

Very obvious- 1/8" gap. melted blob stuck to plastic cover.




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