Battery/Electrical issue - Page 2

Jllm02199 · 07-22-2021, 08:19 AM

Well I'd definitely replace it. May not be the only problem.

DragonLady58 · 08-08-2021, 02:00 PM

Usually, the stators and regulators start acting up when those plugs under the left hand side cover get oily, dirty, corroded....usually melt somewhat....
I always hard wire those connections, keeps the stators and reg's happy....
Yep, fuse box is toast....needs replacing....

BeardedGrappler504 · 08-13-2021, 10:17 PM

Quote:

Originally Posted by DragonLady58

Usually, the stators and regulators start acting up when those plugs under the left hand side cover get oily, dirty, corroded....usually melt somewhat....
I always hard wire those connections, keeps the stators and reg's happy....
Yep, fuse box is toast....needs replacing....

replaced the fuse panel. still having the same problem. the battery voltage never goes above 12.3V.

both Stator vAC is good per the manual
diodes in the rectifiers are good

could the ECU be bad? and if it is, would one from a mean streak or nomad work on the Classic model? I know they look the same, but wasnt sure if they were compatible since they all have different part #s

Flapjack · 08-13-2021, 10:46 PM

Quote:

Originally Posted by BeardedGrappler504

replaced the fuse panel. still having the same problem. the battery voltage never goes above 12.3V.

both Stator vAC is good per the manual
diodes in the rectifiers are good

could the ECU be bad? and if it is, would one from a mean streak or nomad work on the Classic model? I know they look the same, but wasnt sure if they were compatible since they all have different part #s

From my research, the likelihood of the ECU going bad is slim. I thought mine went bad after running the diagnostics in the service manual it was showing that the signal from ECU to coils was low. I ended up disconnecting the ECU for a few hours, cleaning all the pins and ensuring a good connection was being made. After being disconnected a couple hours, I put the ECU back in, reconnected everything else and problem resolved. May be worth a shot and resetting it and making sure the connections are clean and solid.

andyvh1959 · 08-16-2021, 05:06 PM

All I can say is yowsa, those results show you have to be careful jumping a motorcycle from another (larger) vehicle. The only safe way is to make sure the vehicle providing the jump is not running. Or perhaps, connect the jumpers to the motorcycle battery and just let it sit for about 1/2 hour, then try to start it without the jumper cables attached.

Since it is not showing 13.4+ volts at idle, and up to 14.7volts at road speed (3000 rpm) usually indicates the voltage regulator is shot.

BeardedGrappler504 · 08-16-2021, 05:25 PM

Quote:

Originally Posted by andyvh1959

All I can say is yowsa, those results show you have to be careful jumping a motorcycle from another (larger) vehicle. The only safe way is to make sure the vehicle providing the jump is not running. Or perhaps, connect the jumpers to the motorcycle battery and just let it sit for about 1/2 hour, then try to start it without the jumper cables attached.

Since it is not showing 13.4+ volts at idle, and up to 14.7volts at road speed (3000 rpm) usually indicates the voltage regulator is shot.

We thought that too. I have a copy of the Service Manual. We tested both rectifiers, one was bad. I've since replaced both with new ones. Still shows the same voltage when idle/3k RPM.

BeardedGrappler504 · 02-08-2022, 09:55 PM

Changed the wiring harness out. That fixed the speedometer jiggle, and the battery now reads 14.5ish V when running, and 12.5 when bike is off.

**Rasta** · 02-10-2022, 07:15 PM

Glad it is solved!

**tomm** · 03-20-2022, 07:22 PM

I only get on here a few times a year now, so just seeing this.

Glad you got it fixed, but sorry to hear it took replacing the wiring harness. See the thread below. Not sure it is the same problem. Only one other person besides me seems to have seen it. But it definitely was a ridiculous wiring design deep inside the wiring harness.

http://www.vulcanbagger.com/forums/s...ad.php?t=49990

andyvh1959 · 03-21-2022, 12:34 AM

Just the fact that replacing the wiring harness fixed the issue, indicates that jump starting a bike from another larger vehicle can be iffy at times. Like has been said here and other forums, best to jump with a similar sized battery and not from a running vehicle.

Way back in the early 80's I jump started my CB750 from my running Toyota, and like you I ended up replacing the wiring harness to get the bike back to normal.

07-22-2021, 08:19 AM	#16
Jllm02199 Advanced Member Join Date: Aug 2012 Location: Morrow, Ga. Posts: 830	Well I'd definitely replace it. May not be the only problem. __________________ 02 1500 Nomad (07 1600 Motor) 160,000 Red & Black 12" mini apes Galfer lines (6' over) EJK Dobeck Reckless Fairing. Led H4 headlight All LED lights Rockford Fosgate radio Login or Register to Remove Ads
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08-08-2021, 02:00 PM	#17
DragonLady58 Sr. Member Join Date: Jul 2016 Location: Somewhere South of Alaska.... Posts: 2,351	Usually, the stators and regulators start acting up when those plugs under the left hand side cover get oily, dirty, corroded....usually melt somewhat.... I always hard wire those connections, keeps the stators and reg's happy.... Yep, fuse box is toast....needs replacing.... __________________ --------------------- Don't start no schit, there won't be no schit.... My Sarcasm is directly proportional to the amount of Stupidity involved --------------------- VBA#03239 VROC#37400 VRA --------------------- 2014 Vaquero 2001 Nomad FI 2003 Street Glide (sold) 1500 Meanie, fresh rebuild (sold) 90s BUBF Bobber (sold) 2001 UltraCycle FatPounder (Sold) 1975 HD ElectraGlide (Sold) 1982 Kawasaki Z1 Chopper (Sold) Suck It Up & Ride!
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08-16-2021, 05:06 PM	#20
andyvh1959 Advanced Member Join Date: Dec 2017 Location: Green Bay WI Posts: 759	All I can say is yowsa, those results show you have to be careful jumping a motorcycle from another (larger) vehicle. The only safe way is to make sure the vehicle providing the jump is not running. Or perhaps, connect the jumpers to the motorcycle battery and just let it sit for about 1/2 hour, then try to start it without the jumper cables attached. Since it is not showing 13.4+ volts at idle, and up to 14.7volts at road speed (3000 rpm) usually indicates the voltage regulator is shot. __________________ My $1200 Vulcan, to start from. Login or Register to Remove Ads
	0

02-10-2022, 07:15 PM	#23
Rasta Join Date: Sep 2011 Location: Ankeny Iowa Posts: 3,697	Glad it is solved! __________________ VROC#34321 VBA#01867 2012 NCR Rally Savanna. IL. 2013 National Rally Estes Park, CO 2014 NC/SC Rally in the Ozarks, Mountain View AR 2014 NE US/Eastern Canada Rally,Lincoln NH 2015 VBA/VRA Eureka Springs AR 2015 Antlers Rally, Antlers OK. 2016 SCR Rally Salem MO. 2016 NCR Rally Hillsboro WI 2017 Eureka Springs AR 2017 National Rally Lake George NY 2004 Blue and Silver 1500 Nomad(RIP 9-26-19) 2000 Red and Silver 1500 Nomad 2012 Pearl White 1700 Voyager
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03-20-2022, 07:22 PM	#24
tomm Join Date: Sep 2008 Location: Lee, New Hampshire Posts: 568	I only get on here a few times a year now, so just seeing this. Glad you got it fixed, but sorry to hear it took replacing the wiring harness. See the thread below. Not sure it is the same problem. Only one other person besides me seems to have seen it. But it definitely was a ridiculous wiring design deep inside the wiring harness. http://www.vulcanbagger.com/forums/s...ad.php?t=49990 __________________ Tom Maziarz (tomm) VBA #00766 2008 Kawasaki Nomad (Black) 1978 Suzuki GS750EC (My son is riding it now.) 2017: National Rally - Lake George, NY 2016: NE US / E Canada Rally - Mont Tremblant, QC 2015: National Rally - Eureka Springs, AR 2014: NE US / E Canada Rally - Lincoln, NH 2012: NE US / E Canada Rally - Wellsboro, PA
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02-08-2022, 09:55 PM	#22
BeardedGrappler504 Jr. Member Join Date: Feb 2021 Location: New Orleans Posts: 21	Changed the wiring harness out. That fixed the speedometer jiggle, and the battery now reads 14.5ish V when running, and 12.5 when bike is off.
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03-21-2022, 12:34 AM	#25
andyvh1959 Advanced Member Join Date: Dec 2017 Location: Green Bay WI Posts: 759	Just the fact that replacing the wiring harness fixed the issue, indicates that jump starting a bike from another larger vehicle can be iffy at times. Like has been said here and other forums, best to jump with a similar sized battery and not from a running vehicle. Way back in the early 80's I jump started my CB750 from my running Toyota, and like you I ended up replacing the wiring harness to get the bike back to normal. __________________ My $1200 Vulcan, to start from.
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