Electrical issue after fixing the vanity trunk light.


Information and questions on GL1200 Goldwings (1984-1987)
  • Sponsored Links
Post Reply
Chompper26
Posts: 15
Joined: Sun Nov 26, 2017 4:41 am
Location: Dallas, TX
Motorcycle: 1985 Gl1200 Limited Edition

Electrical issue after fixing the vanity trunk light.

Post by Chompper26 » Sat Dec 02, 2017 11:34 pm



Ok so i fixed the little vanity light in the trunk lid of my 85 1200 limited and it was pretty simple. But then i went to work. Everything was fine till morning when the bikes battery was dead. (Work nights) had to get a jump. And now my volt meter is telling me 12.8/12.9 at 3500 rpm going down the freeway. Is there anyway one (the trunk light) could have anything to do with the other. The switch does work and turns off the light when the trunk is closed. Could it be shorting the system or something and putting a drain on the electrical system causing it to not charge up the battery? I disabled the light (as that was fixed then all of a sudden problems) but i still only get 12.8/12.9 on the voltmeter. Second question is could the charge state of the battery cause this seeing as it was practically 100% dead when i got the jumpstart. Maybe the system cant recharge the battery when its that low on juice or something? Any help would be appreciated.



User avatar
Rednaxs60
Posts: 1336
Joined: Wed Nov 18, 2015 12:44 pm
Location: Victoria, British Columbia, Canada
Motorcycle: 1985 GL1200 LTD, 2008 GL1800

Re: Electrical issue after fixing the vanity trunk light.

Post by Rednaxs60 » Sun Dec 03, 2017 10:20 am

The bike's charging system is not meant to recharge a dead battery. Take it out and use an industrial style charger, or a small automotive one.

Cheers
"When you write the story of your life, don't let anyone else hold the pen"

Ernest

Chompper26
Posts: 15
Joined: Sun Nov 26, 2017 4:41 am
Location: Dallas, TX
Motorcycle: 1985 Gl1200 Limited Edition

Re: Electrical issue after fixing the vanity trunk light.

Post by Chompper26 » Sun Dec 03, 2017 11:18 am

Used a trickle charger last night and charged the battery. Then put it into the bike and rode home. Almost made it the bike at one point was up to 15.0 on the voltmeter. Came back down from 75mph 3800 (about) rpm to 2500-2800 staying around 63-68mph. And it held at 14.4v for awhile then it just started dropping and got down to about 11.2v and suddenly the engine cut off and it wouldnt restart.

Took the battery in and found out it was actually bad. So im hoping that is the problem.
I so so so so dont want another lawn ornament. Which is exactly what this bike turns into if its the stator. I cant afford the labor to pull the engine and replace it. Cant fix it myself due to injuries so itll be decoration till i can save enough up for the couple of grand itll cost to get it fixed.

User avatar
julimike54
Posts: 334
Joined: Sun Feb 01, 2015 12:21 pm
Location: Euless, Texas
Motorcycle: 1986 GL1200A original owner
2016 HD FLTRU

Re: Electrical issue after fixing the vanity trunk light.

Post by julimike54 » Sun Dec 03, 2017 11:34 am

I'd say you found the problem. Seems like these days batteries tend to die in the shorting out mode and drag the electrical systems down. I had a truck battery fail that way and it couldn't be jumped off, had to completely remove battery from the circuit.
Image
Riding anything is a good day!
Mike

Chompper26
Posts: 15
Joined: Sun Nov 26, 2017 4:41 am
Location: Dallas, TX
Motorcycle: 1985 Gl1200 Limited Edition

Re: Electrical issue after fixing the vanity trunk light.

Post by Chompper26 » Sun Dec 03, 2017 3:21 pm

Yeah but did the battery go bad because of something wrong with the system or did the bad battery cause a bit of chaos in the system?

You know which came first, the chicken or the egg? Lol

User avatar
DenverWinger
Posts: 133
Joined: Thu Jun 23, 2011 2:20 pm
Location: Denver, CO
Motorcycle: 1972 CL-350 (1980-1988) sold
1978 Suzuki GS-550 (1985-2005) sold
1977 GL-1000 (2002-2006) sold
1980 GL-1100 STD Vetter (2005-)
1993 GL-1500A Aspencade (2017-)
1983 Trav-Lite Camper (2010-)

Re: Electrical issue after fixing the vanity trunk light.

Post by DenverWinger » Sun Dec 03, 2017 5:08 pm

Probably caused by the vanity light. Automotive and Motorcycle batteries are not like marine Deep-Cycle batteries in that they don't handle a complete discharge very well, and often won't "come back"...


They say 98% of all Hardleys ever made are still on the road..... The other 2% made it home. :lol:
(I stole this from somebody on another GW site...) :roll:

Post Reply