Shorted battery, Smoking R/R and hot wires. - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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Where does this wire go?
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post #1 of 6 (permalink) Old 07-07-2019, 03:42 PM Thread Starter
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Hey all. Recently broke down on the highway. New battery just recently installed prior to this by the previous owner. Lost all electrical power, couple of backfires. Stopped and smelled burning electronics. Couldn't see smoke due to the traffic passing me causing wind. Fast forward to today, installed new battery. Fired off the bike. Let it warm and tested voltage at the battery. 17v @ 3500rpm followed by the R/R smoking and the wires to it hot. In my experience, resistance causes excessive heat. Will test stator and R/R but has anyone had a R/R burn up like this? My assumption is failed Stator killed regulator which shorted the battery. Thx all!
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post #2 of 6 (permalink) Old 07-07-2019, 04:50 PM
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Make sure the connections to/from the battery are clean and tight.

If it all checks out, it's the R/R letting to much voltage through. Should also check the wiring and plugs on the R/R.

17v is wide open, no limit at all.

2003-21k mi
Shaved w/UniPK92+Stock Jets-TPE/MOSFET-Shinko Tires-AGM batt-bags-chrome-LEDs...more
__________________________________________________ ____________
Repair Manual: http://www.mediafire.com/file/mj7z81..._Catalogue.pdf

Owner's Manual: http://www.mediafire.com/file/nscb5f...ers+Manual.pdf
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post #3 of 6 (permalink) Old 07-07-2019, 05:27 PM Thread Starter
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Quote:
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Make sure the connections to/from the battery are clean and tight.

If it all checks out, it's the R/R letting to much voltage through. Should also check the wiring and plugs on the R/R.

17v is wide open, no limit at all.

https://www.vn750.com/#/topics/12333

Thx Again man. So, test A based on the link showed infinite resistance. Test B showed 0 ohms. Test C shows 26.5 - 35.2 AC v at 2k rpm cold.

Batt connections and main frame ground off of the battery are good, clean and tight. Thoughts??

Last edited by Superrmario; 07-07-2019 at 05:54 PM.
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post #4 of 6 (permalink) Old 07-07-2019, 06:03 PM
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Quote:
Originally Posted by Superrmario View Post
https://www.vn750.com/#/topics/12333? page=1

Thx Again man. So, test A based on the link showed infinite resistance. Test B showed 0 ohms. Test C shows 26.5 - 35.2 AC v at 2k rpm cold.

Batt connections and main frame ground off of the battery are good, clean and tight. Thoughts??
The link goes to a forum list, but it looks like the stator is fine.

17v says bad R/R to me, but it won't hurt to check the wiring there.

17v will cook a battery and pop light bulbs.

2003-21k mi
Shaved w/UniPK92+Stock Jets-TPE/MOSFET-Shinko Tires-AGM batt-bags-chrome-LEDs...more
__________________________________________________ ____________
Repair Manual: http://www.mediafire.com/file/mj7z81..._Catalogue.pdf

Owner's Manual: http://www.mediafire.com/file/nscb5f...ers+Manual.pdf
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post #5 of 6 (permalink) Old 07-07-2019, 06:26 PM Thread Starter
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Quote:
Originally Posted by Spockster View Post
Quote:
Originally Posted by Superrmario View Post
https://www.vn750.com/#/topics/12333? page=1

Thx Again man. So, test A based on the link showed infinite resistance. Test B showed 0 ohms. Test C shows 26.5 - 35.2 AC v at 2k rpm cold.

Batt connections and main frame ground off of the battery are good, clean and tight. Thoughts??
The link goes to a forum list, but it looks like the stator is fine.

17v says bad R/R to me, but it won't hurt to check the wiring there.

17v will cook a battery and pop light bulbs.
That list is the testing for the Stator.

I appreciate the help. I will inspect the plugs and order a rectifier.
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post #6 of 6 (permalink) Old Today, 07:37 PM Thread Starter
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Quote:
Originally Posted by Spockster View Post
Quote:
Originally Posted by Superrmario View Post
https://www.vn750.com/#/topics/12333? page=1

Thx Again man. So, test A based on the link showed infinite resistance. Test B showed 0 ohms. Test C shows 26.5 - 35.2 AC v at 2k rpm cold.

Batt connections and main frame ground off of the battery are good, clean and tight. Thoughts??
The link goes to a forum list, but it looks like the stator is fine.

17v says bad R/R to me, but it won't hurt to check the wiring there.

17v will cook a battery and pop light bulbs.
Regulator fixed it. Went with the below link.

https://www.jpcycles.com/product/240...&totalResult=1
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