Charging system - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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Where does this wire go?
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post #1 of 16 (permalink) Old 01-26-2014, 08:02 PM Thread Starter
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Charging system

I recently bought a 1995 Vulcan 750. Ive never driven a motorcycle in my life. And don't know a lot about the mechanics. The bike fires right up. However, once running, if I disconnect the neg wire from the battery the bike shuts off. Can anyone please help me to find out why this could be happening? Im assuming, like in a car/truck, the bike should stay on.
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post #2 of 16 (permalink) Old 01-26-2014, 08:05 PM
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Try to rev it up a little when to do.it might bot have a problem, as most bikes don't charge much at idle.does the battery stay charged when normally running?

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post #3 of 16 (permalink) Old 01-26-2014, 08:09 PM Thread Starter
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Yes, it seems to stay charged. I have a multi-meter. But not sure what the volt/amp should be on a bike.
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post #4 of 16 (permalink) Old 01-26-2014, 08:18 PM
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If I remember should be 13.7-14v when at about 2000 rams.others will chime in that are better with electrical systems on these bikes.by the way, where ya from? Someone may be near by that can help and welcome

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post #5 of 16 (permalink) Old 01-26-2014, 08:24 PM
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Unlike cars these bike alternators don't turn on and off. Instead the regulator reads the system voltage and either sends power to the battery or burns it off as heat, the alternator is always producing power. I wouldn't be surprised if the R/R (Regulator / Rectifier)(probably mounted under your battery box) decides to burn off all power the alternator is making when it sees the voltage spike that would be produced when you unhooked the battery.

No power from the alternator for the the plugs at that point and the battery would also be out of the power loop.

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post #6 of 16 (permalink) Old 01-26-2014, 09:25 PM
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Bike will not run if the bat is disconnected.
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post #7 of 16 (permalink) Old 01-26-2014, 09:36 PM Thread Starter
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Thanks all for the help. BTW im from glens falls new York.
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post #8 of 16 (permalink) Old 01-26-2014, 09:38 PM
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Trtisten, fill out your profile details, read the vulcan verses, and most importantly... Welcome to the madness.
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post #9 of 16 (permalink) Old 01-26-2014, 09:53 PM
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Quote:
Originally Posted by TristenCorlew View Post
Thanks all for the help. BTW im from glens falls new York.
That's out by Watkins Glen, correct? I'm from Norwich, NY, about 40 minutes north of Binghanton and about 2hrs east of Syracuse

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post #10 of 16 (permalink) Old 01-26-2014, 10:08 PM
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Quote:
Originally Posted by TristenCorlew View Post
.............However, once running, if I disconnect the neg wire from the battery the bike shuts off. Can anyone please help me to find out why this could be happening?...........
First off, why are you disconnecting the neg ground will it's running?
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