Electrical?? - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Electrical
Where does this wire go?
Includes Electrical mods, Lights, Stator,
Rectifier, Diagrams, etc

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post #1 of 13 (permalink) Old 08-10-2009, 09:15 AM Thread Starter
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Exclamation Electrical??

I have a 1994 750. I noticed that when I start it in the mornings it will backfire and miss. I take it 5 minutes into my ride and it acts normally. Then, the other day it just totally died on me going down the road. I got pulled to the side and tried to fire it. It just kept cranking and eventually backfired and started. I got myself home ASAP. I took the battery to Advance auto and had them check it. They said it was good and charged it for me. I put it in the bike and it started up like a brand new bike. The next day I went to ride it and it was acting the way it was before. I am wondering if a wire is bare and causing my battery to drain? I did go out before Advance took a look at it and the battery was dead. Does anyone else ever experience this problem? Oh, I checked the battery with a volt meter and it said at the time it was putting out 13.5 volts. HELP!!!
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post #2 of 13 (permalink) Old 08-10-2009, 09:22 AM
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I can't answer your questions, but I know those that can are going to ask at what RPMs you checked the battery. Check it at idle and around 4,000 RPMs and post the results.

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post #3 of 13 (permalink) Old 08-10-2009, 10:49 AM
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Seems unlikely your battery was putting out 13.5 volts unless you were running your bike at about 3000 RPMs. Three things can be at play here. Either your battery can not hold a charge and needs to be replaced, or your charging system is unable to charge your battery and it needs to be checked closely, or you have something draining your battery while the bike is off, perhaps a mod you installed that is not switched to your ignition switch or headlight.

Charge your battery, then let us know what your voltmeter says your battery is putting out when the bike is off, at idle and at 3000 RPM. Then ride it that day and re-take the voltmeter readings, then let it sit overnight and re-take the readings again. Let us know what all the readings were, and we will take it from there.

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post #4 of 13 (permalink) Old 08-10-2009, 11:09 AM
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Check all your grounds and clean them. Then see what it does and go from there, you have a lot of checking to do. Hope this helps, bad ground can cause what you said.

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post #5 of 13 (permalink) Old 08-10-2009, 06:15 PM
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I had a little trouble with the stand safety switch. Spray and make sure that the switch is working freely.

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post #6 of 13 (permalink) Old 08-10-2009, 10:58 PM
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grounds and conections first then check to see if there is any amps pulling when the bike is off... if your connections check out it sounds like a charging problem...



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post #7 of 13 (permalink) Old 08-11-2009, 09:14 AM Thread Starter
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Also, if I would want to change to a sealed battery, what kind is the best and is this even possible? I am getting tired of the wet cell.
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post #8 of 13 (permalink) Old 08-11-2009, 09:37 AM
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The wet cell is definitely bad news for lots of reasons. You're on the right track with the suggestions above. This is a good AGM battery: http://www.bigcrank.com/kawasaki-vn7...y/ETX-15L.html
I have one on the 750 and it's new so I can't vouch for its longevity, but AGM's usually last 2-3 years.

You really need to know if it is your battery or the charging system before you slap a new one in there though. Check your battery voltage like has been suggested already, with the bike not running, then at idle, then revved up to 4000 and let us know what it shows. Then run it up to full hot on a ride and check it again while it is still hot. Let us know what you find. Good luck!

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post #9 of 13 (permalink) Old 08-11-2009, 10:40 PM Thread Starter
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Ok, where are all the grounds located on the bike?
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post #10 of 13 (permalink) Old 08-11-2009, 10:52 PM
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frame to back of engine to frame batt to frame



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If u dont have it already Here is the Service Manual
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