headlight problems - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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Where does this wire go?
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post #1 of 7 (permalink) Old 05-07-2014, 09:57 PM Thread Starter
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headlight problems

I'm getting no power to my head light ... the wiring seems o.k... could it be the relay?.. if so where is it located?.. the left handle bar control assembly?, I just replaced that.. help.. I'm wiring it direct to the battery and it's draining it.. help!! hahaha
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post #2 of 7 (permalink) Old 05-08-2014, 09:02 AM
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Here is a large diagram.

http://www.tocmanufacturing.com/File...ada%20copy.gif


Check all the fuses I assume? You'll just have to follow all the cables. If the light is working then it's just a simple matter of being patient and maybe an ohm meter to check between segments for continuity.

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post #3 of 7 (permalink) Old 05-08-2014, 09:13 AM
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^2x. Check for voltage. Also, if you don't have a copy of a repair manual you can download it from my signature.
It can still be challenging to follow so ask questions once you e check your
Connections & voltage. There is a pin in the junction box if you use to bypass
The relay which is part of the junction box. Sorry, don't remember the number
Off hand.

Are you sure your bike is charging, if your stator has failed, this can cause this symptom.
The headlight relay is triggered from a feed off the stator.
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post #4 of 7 (permalink) Old 05-08-2014, 11:05 AM
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Quote:
Originally Posted by kanuck69 View Post
^2x.-----
There is a pin in the junction box if you use to bypass
The relay which is part of the junction box.
---
The headlight relay is triggered from a feed off the stator.
Yes.
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post #5 of 7 (permalink) Old 05-08-2014, 12:24 PM
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Quote:
Originally Posted by Grace View Post
I'm getting no power to my head light ... the wiring seems o.k... could it be the relay?.. if so where is it located?.. the left handle bar control assembly?, I just replaced that.. help.. I'm wiring it direct to the battery and it's draining it.. help!! hahaha
Is the bike stock or was anything modified that might be causing the issue?
You said the headlight did not work, but mentioned draining the battery when connected directly to the light.....how are you making the connection?

FYI: the headlight will (on a stock system) NOT come on until the engine is either running or cranked over a bit. The Junction Box (fuse box) has a relay in there that controls the headlight function. if the relay is bad, you can do the bypass procedure, but then the headlight will come on before the bike is running and can drain the battery.

If the Junction Box relay has failed, PM me and I can work out a repair or a swap for a working one with you.
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post #6 of 7 (permalink) Old 05-08-2014, 12:57 PM
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Headlight relay bypass - 8-pin connector on the junction box has one empty pin, move the blue wire to the empty pin. Have to use a small pick to unlock the tiny tab on the spade to pull it out of the plug.

With that bypassed, headlight will come on as soon as the key is switched on.

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post #7 of 7 (permalink) Old 05-10-2014, 04:30 PM
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One of my first post was the same issue, my headlight would not come on. The first thing I was told to check was my charging system. I didn't understand it at first so I checked it anyway. It wasn't working. It's an easy thing to check first. The headlight relay is controlled from 1 of the 3 stator wires. My stator was bad and not supplying the voltage to activate the relay. My bike is stock.
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