Car Battery? - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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Where does this wire go?
Includes Electrical mods, Lights, Stator,
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post #1 of 14 (permalink) Old 12-19-2008, 10:28 AM Thread Starter
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Car Battery?

Have removed old battery, ordered MF Yausa (sp?) online, and am repainting box due to acid leak. Would it hurt to run jumper cables from my truck to the bike's battery leads to turn the bike over, or am I likely to fry something? Don't want to start it, but would like to turn it over.
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post #2 of 14 (permalink) Old 12-19-2008, 10:44 AM
 
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the only problem with trying that is the charging system could actually overload the bikes system and fry the stator/RR or other stuff.... i think... anyone else know?
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post #3 of 14 (permalink) Old 12-19-2008, 11:32 AM
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Someone may correct me, but I think it's OK as long as truck is not running.

"Shutting up rarely leads to anything bad"

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post #4 of 14 (permalink) Old 12-19-2008, 11:59 AM
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I take it you've already returned the old battery for the core charge?


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post #5 of 14 (permalink) Old 12-19-2008, 01:05 PM
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Turn off the truck, turn the truck's headlights and radio on.

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post #6 of 14 (permalink) Old 12-19-2008, 01:11 PM
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I use my car battery to jump my bike all the time....but i don't give myself a great ground....I hook up the positive cable to the input side of the starter solenoid, hold down the start button and tape the ground against the frame.
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post #7 of 14 (permalink) Old 12-19-2008, 01:42 PM
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You can jump your moto battery off the truck battery, but definitely do NOT turn on the truck. Just do a cold jump and you'll be fine - no frying will result.

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post #8 of 14 (permalink) Old 12-19-2008, 02:24 PM
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Quote:
Originally Posted by Sloppyburpfest View Post
Turn off the truck, turn the truck's headlights and radio on.
I`ve boosted mine off the car battery, engine off and nothing else turned on, and did not hurt anything.

You don`t say why you want to turn the engine over before you get the new battery. The Clymer manual warns of instantaneous damage to the semi-conductors in the ignition system if any one of several precautions are not observed;

1. Never connect battery backwards.

2. Do not disconnect the battery when the engine is running. A voltage surge will occur which will damage the R/R and possibly burn out light bulbs.
(I`m not sure, but think it is probable that starting a bike without a battery installed and connected would have the same effect)

3. Never disconnect any electrical connections when the engine is running.

If you just want to turn the engine over for a few seconds without starting it and no battery in the bike, I would suggest pulling one spark plug from each cylinder, and/or pulling the 2 low voltage leads off of the ignition coils first. Since you already have the battery box out, the coils are easy to get at. I think if the bike started with no battery hooked up to the R/R, you could get a voltage spike that could cook it, as per #2 warning above.

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post #9 of 14 (permalink) Old 12-19-2008, 02:32 PM
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Quote:
Originally Posted by slimvulcanrider View Post
I use my car battery to jump my bike all the time....but i don't give myself a great ground....I hook up the positive cable to the input side of the starter solenoid, hold down the start button and tape the ground against the frame.
slim, I know you mean to say you only TAP the ground clamp against the frame, not tape it.

Gordon

1991 VN 750 -"Cosmic Lady" or "Bad Girl"?
Purchased May 16, 2008
Approx.19,300km (12,000 miles)

H-D windshield
Relocated R/R
MF-AGM battery
Fiamm Freeway Blaster horns
F&S luggage rack and engine guard
Kury Offset Hiway pegs
July 13, 2016, Riding on the DARKSIDE now, Classic Radial 165/80-15


TOP TEN THINGS A NEW RIDER/OWNER SHOULD DO. Click on link.
https://www.vn750.com/forum/showthread.php?t=9127
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post #10 of 14 (permalink) Old 12-19-2008, 03:32 PM Thread Starter
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I put Sea Foam in the carbs and want to turn it over in order to move it from the bowl to the jets. (See earleir post about bike running but not idling.) Gave the old battery to my son to replace his ATV battery (should have waited I suppose) and he installed it already.
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