88 Vulcan 750 - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Electrical
Where does this wire go?
Includes Electrical mods, Lights, Stator,
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post #1 of 9 (permalink) Old 07-11-2014, 07:09 PM Thread Starter
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88 Vulcan 750

Hello all,

I just bought my first bike about a month ago, a 1988 Kawasaki Vulcan 750. I haven't had any problems with it until the other day. I was riding along and noticed that I had no tach, temp gauge, fuel gauge, or neutral indicator light. I have turn signals and it starts fine. When I stopped, I discovered that I also had no headlight, no tail/brake light, or horn (hadn't noticed that before because the turn signals work). The alternator is charging fine and I haven't found any broken wires yet. I have the Kawasaki maintenance manual with wiring diagrams and I'm an aircraft mechanic, so I do understand them. Any information or ideas would be greatly appreciated. Thanks very much.

- Mike
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post #2 of 9 (permalink) Old 07-11-2014, 07:42 PM
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remove the left side cover and check the fuses. that would be a good start. cheapest anyway. check all ground wires and clean with a small wire brush. clean the connections using contact spray then put electrical grease on all conections. any other questions feel free to ask. good luck.

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2003 kaw vn 750 pushing 40,000 miles.
tp stator
dampers
coil relay mod
other stuff not listed
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motorcycle repair at a stealership 1 million bucks, repairs with the help of the Vulcan750 forum priceless.
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post #3 of 9 (permalink) Old 07-11-2014, 07:46 PM
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one of these is perfect for the harness connections. should be able to pick up at lowes in the welding supplies. or most auto parts stores.


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2003 kaw vn 750 pushing 40,000 miles.
tp stator
dampers
coil relay mod
other stuff not listed
mustang seat
motorcycle repair at a stealership 1 million bucks, repairs with the help of the Vulcan750 forum priceless.

Last edited by emtdon; 10-19-2014 at 10:03 AM.
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post #4 of 9 (permalink) Old 07-11-2014, 10:19 PM Thread Starter
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Thanks emtdon. Fuses are good, everything worked before I rode. I was on lunch, rode home, unlocked the door for my wife, started back up, and was halfway back to work when the gauges went out. There wasn't anything intermittent, just all of a sudden. I started chasing wires a little...I don't have power to the headlight and tail light fuses. There is power to the acc fuse and the main fuse.

On a different note, I see you have a mustang seat on your Vulcan. Was that a single seat from the factory, or did it have a two-up seat? I have the two-up seat, but would like to install a single seat...can't seem to find anything aftermarket. Any ideas where to look, or do you think I'll have to do something custom?
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post #5 of 9 (permalink) Old 07-11-2014, 10:51 PM
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Almost a long shot but check the wiring to, and the ignition switch. If my memory is correct, the switching for the lights goes through the key switch and it isn't uncommon to have issues there that make most scratch their head.

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post #6 of 9 (permalink) Old 07-12-2014, 02:59 AM
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under the left hand tank cover are two electrical connections... one is red and the other I don't remember the color... check them both... they can come unplugged very easily... However, I suspect its more than likely a bad Junction/Fuse box.
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post #7 of 9 (permalink) Old 07-12-2014, 06:44 AM
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Quote:
Originally Posted by dragon159 View Post
Almost a long shot but check the wiring to, and the ignition switch. If my memory is correct, the switching for the lights goes through the key switch and it isn't uncommon to have issues there that make most scratch their head.
He is correct. Take it apart, the puck under the key. Careful with the springs and ball bearing in there. I'd lay bets on it. Explains why your bike still runs and why those particular items arent working. Mybe giggle your key around first to test.

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post #8 of 9 (permalink) Old 07-12-2014, 10:49 AM
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Yup my money is on the key switch

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post #9 of 9 (permalink) Old 07-12-2014, 01:13 PM Thread Starter
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Thanks for the help, hopefully I get a chance to work on it today, I'll let you know what happens

- Mike
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