Head light twitches - 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 4 (permalink) Old 08-15-2017, 04:02 PM Thread Starter
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Head light twitches

Hello all,


My head light has the tendecy of flickering if the motor does not start up on the first spin. it also cuts out sporadically while I am driving, most of the time a restart fixes the problem but not always. I know these bike have a headlight reserve could this be causing me the problem?


Thank you for the help in advance

Andre
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post #2 of 4 (permalink) Old 08-16-2017, 04:49 AM
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If the flickering is related to starting the bike (i.e. a half-start causes flickering, or restarting fixes the flicker) then I'd guess your headlight relay found in the junction box is going bad. In stock configuration the relay is triggered by incoming voltage from the stator, then should stay on solid until the ignition is turned to 'off'. Once the "blue wire mod" has been performed, the relay is bypassed and the headlight will come on when the ignition is turned to 'on' and will stay on until ignition is turned to 'off'.

The blue wire mod can be done in a non-destructive way so you can ride around for a while to see if that fixes the problem before you decide if you want to splice wires.

LED headlights can flicker due to the RLU, but that shouldn't happen with the stock headlamp.

1992 US-nonCA * tuxedo mod * r/r relocated

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Wiring Diagram + annotations * still undergoing revisions, but still more useful than the generic one. Let me know if you find mistakes or think something additional should be added
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post #3 of 4 (permalink) Old 08-18-2017, 10:08 AM Thread Starter
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I have installed HID light, I forgot to mention it. I will check on the relay to see what I can come up with. Thank you for the reply
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post #4 of 4 (permalink) Old 08-18-2017, 07:37 PM
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If your new HID bulb draws less amperage than the stock bulb, then your RLU might be freaking out after all. Look up the RLU bypass mod.

1992 US-nonCA * tuxedo mod * r/r relocated

Vulcan slang for newcomers
Service Manual Download
Wiring Diagram + annotations * still undergoing revisions, but still more useful than the generic one. Let me know if you find mistakes or think something additional should be added
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