Starter circuit / Lights problem - 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 15 (permalink) Old 08-05-2013, 02:56 PM Thread Starter
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Starter circuit / Lights problem

I have a stock 2002 VN750. The starter button wouldn't activate the starter relay, but after several tries, it started up. This lasted for one ride and then it stopped working. Also, the headlight and the displays for neutral, headlight and high beam don't come on.

After some troubleshooting, I found that when I disconnect the connector for the Brown/White wires coming out of the ignition switch, it starts right up, but without lights. I reconnected the Brown/Wht wires and then pulled the fuse for the Lights circuit and it would not start. Apparently, the Brown/White wire splits to a brown wire and also goes to the voltage regulator's voltage sensor.

I'm thinking that the voltage sensor is shutting down the system, but I don't know if its because of something else. Any suggestions on how to proceed?
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post #2 of 15 (permalink) Old 08-05-2013, 03:45 PM Thread Starter
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I disconnected all connectors with the brown/white wire: regulator, reserve lighting box and the junction box and I am measuring 6 ohms from the ignition switch brn/wht connector to ground. Did i miss a connection somewhere or does it look like a harness problem?
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post #3 of 15 (permalink) Old 08-05-2013, 03:47 PM
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The red connection off your ignition switch itself is shot, or the connections inside are really corroded
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post #4 of 15 (permalink) Old 08-05-2013, 05:43 PM
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the said brown wire is a pita... think of it as the main artery of the bike. what it doesn't effect is slim.

I would look into faulty safety switches.
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post #5 of 15 (permalink) Old 08-05-2013, 06:11 PM
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couldn't this be something as simple as a bad ignition switch or start button??

They can be opened and cleaned before you start tearing into the wire harness....that's where I would start if it were me.
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post #6 of 15 (permalink) Old 08-05-2013, 06:17 PM
..have a vulcan good day!
 
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Quote:
Originally Posted by kc2dgq View Post
couldn't this be something as simple as a bad ignition switch or start button??

They can be opened and cleaned before you start tearing into the wire harness....that's where I would start if it were me.
Absolutely !

'86 VN750 13,700 mi -Stock
-Purchased 2008 w/8800mi
Replaced ALL Cables . Kuryakyn LED Voltmeter
SilverStar Ultra 9003/HB2 H4 Headlamp, Jardine Fwd Controls,
Iridiums DPR7EIX-9 & Wires, Tuxedo Mod, Coil Mod, P/U Sensor Mod, Fork Seals,
Splines Lubed - 11/4/2012 - MF AGM Battery
Additional Flashing LED Brake Light on Trunk
Dampers went out @ 13+K !
After TOC MCCT's..... so amazingly quiet I discovered a rattling heat shield on my stock exhaust !
...have a vulcan good day!
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post #7 of 15 (permalink) Old 08-05-2013, 06:46 PM
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I think I said that
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post #8 of 15 (permalink) Old 08-05-2013, 06:50 PM
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If you cant hit the start button and have the engine crank, its either going to be a battery ground the main ignition switch, red wire from the ignition switch. or power from battery on the white wire to ignition switch. the kill switch on right handlebar or starter switch which is run by the red wire to the kill switch then jumps to starter switch, which then goes to starter relay. which then jumps the main battery circuit to the starter via the relay., but willing to bet you your issue is at the ignition switch
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post #9 of 15 (permalink) Old 08-05-2013, 07:20 PM Thread Starter
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Quote:
Originally Posted by slimvulcanrider View Post
the said brown wire is a pita... think of it as the main artery of the bike. what it doesn't effect is slim.

I would look into faulty safety switches.
Yep, it looks as though the neutral switch is not working. I grounded the green wire connected to it and it fired right up. The only thing that seemed odd is that the headlight didn't come on until after i pressed the start button. Is that normal? I never paid attention.
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post #10 of 15 (permalink) Old 08-05-2013, 07:26 PM
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Quote:
Originally Posted by axemanv90 View Post
Yep, it looks as though the neutral switch is not working. I grounded the green wire connected to it and it fired right up. The only thing that seemed odd is that the headlight didn't come on until after i pressed the start button. Is that normal? I never paid attention.
Yes, that is Normal.
AC Output from the Stator activates the headlight relay.


'86 VN750 13,700 mi -Stock
-Purchased 2008 w/8800mi
Replaced ALL Cables . Kuryakyn LED Voltmeter
SilverStar Ultra 9003/HB2 H4 Headlamp, Jardine Fwd Controls,
Iridiums DPR7EIX-9 & Wires, Tuxedo Mod, Coil Mod, P/U Sensor Mod, Fork Seals,
Splines Lubed - 11/4/2012 - MF AGM Battery
Additional Flashing LED Brake Light on Trunk
Dampers went out @ 13+K !
After TOC MCCT's..... so amazingly quiet I discovered a rattling heat shield on my stock exhaust !
...have a vulcan good day!
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