headlight not working - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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Where does this wire go?
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post #1 of 21 (permalink) Old 07-23-2015, 08:11 PM Thread Starter
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headlight not working

Just picked up an old vn750 89 to be exact. definitely a work in progress. the headlight is not working at all. I do see a blue wire that looks to be broken but do not see what it goes to I assume it could be related but am unsure of where the wire goes any help would be appreciated.
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post #2 of 21 (permalink) Old 07-23-2015, 08:17 PM
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when the system is working correctly, the headlight wont come on until the stator is producing power (engine running basically).

is the engine running and able to provide some power to the bike?

2005 VN750

Sold 11-27-17
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post #3 of 21 (permalink) Old 07-23-2015, 08:53 PM Thread Starter
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yeah the bike runs I rode it home.
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post #4 of 21 (permalink) Old 07-23-2015, 09:24 PM
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I don't want to ask a stupid question,but is the bulb good?if so,look into the headlight bypass.is it charging?one of the stator legs might not be good.

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post #5 of 21 (permalink) Old 07-23-2015, 09:33 PM Thread Starter
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to be honest I haven't had a chance to check yet. I got it home and noticed it isnt working. there is a blue wire hanging loose in the general area I assume it has something to do with it but it is too dark for me to check it out beyond that. I will check it out more tomorrow after work.
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post #6 of 21 (permalink) Old 07-23-2015, 10:27 PM
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Quote:
Originally Posted by nhsmoker View Post
to be honest I haven't had a chance to check yet. I got it home and noticed it isnt working. there is a blue wire hanging loose in the general area I assume it has something to do with it but it is too dark for me to check it out beyond that. I will check it out more tomorrow after work.
The blue wire is an accessory lead which is always hot. Pull the headlight and using a volt meter see if you have 12.5 volts going into the 3 prong headlight socket ( with engine running). If you do your headlight is bad. If you don't check the fuses. If they look good do a search here and do the " headlight relay bypass". This will supply the headlight with direct power from the battery just by turning on the ignition switch. There have been many problems with the headlight relay circuit, including mine.
One thread :https://www.vn750.com/forum/showthrea...t+relay+bypass

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post #7 of 21 (permalink) Old 07-23-2015, 10:35 PM Thread Starter
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Quote:
Originally Posted by JM2001 View Post
The blue wire is an accessory lead which is always hot. Pull the headlight and using a volt meter see if you have 12.5 volts going into the 3 prong headlight socket ( with engine running). If you do your headlight is bad. If you don't check the fuses. If they look good do a search here and do the " headlight relay bypass". This will supply the headlight with direct power from the battery just by turning on the ignition switch. There have been many problems with the headlight relay circuit, including mine.
Thanks Ill check that out after work. I was just worried about the blue wire that went no where mostly because the two wires that are near it are twisted and taped together which is never a good sign. This weekend I will get some heat shrink tubing and solder the wires. Hopefully I will have the headlight going tomorrow. Ill let you know
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post #8 of 21 (permalink) Old 07-24-2015, 04:49 PM Thread Starter
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well so far not good news. no power to the plug so i researched the blue wire trick and did that still no power. the fuse is good but I am sort of lost as to where to check for a problem.
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post #9 of 21 (permalink) Old 07-24-2015, 04:55 PM
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Did you perform the Headlight relay bypass as suggested by JM2001?
He provided the link to the procedure.
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post #10 of 21 (permalink) Old 07-24-2015, 05:08 PM Thread Starter
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Did you perform the Headlight relay bypass as suggested by JM2001?
He provided the link to the procedure.
I did still no power at the plug
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