No power headlight bulb - Ex-500.com - The home of the Kawasaki EX500 / Ninja 500R
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post #1 of 7 (permalink) Old 5-24-2019, 9:46 PM Thread Starter
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No power headlight bulb

Hello,

I have acquired a 1988 EX500. Unfortunately the only body pieces it came with was the fuel tank and the tail. The owner before me did some crazy whack crap to it. So a lot of the bike's fairings are a no show. That brings me to my point with the headlight. There's no upper fairing. He rigged some cruiser type of headlight on the bike with the universal headlight mount. Hence, he did his own wiring job... I got an extra harness though that came with the bike. So the light was working before, but not bright at all.

A buddy of mine gave me a Daymaker LED to use for the bike. I got in there and started messing with the light and observed this guy's wiring job with solder and electrical tape. I began to take apart the wires and stripped/cut the female ends off the other harness to use for the harness currently on the bike for the LED. The LED has 3 prongs so I figured this would be appropriate. I'm not getting any power to the headlight even after turning the bike over. I am aware of the wiring schematic for this bike and I feel that I followed it to a tee for the headlight.
The LED didn't come with any instructions unfortunately. All I can tell you is that there's a red, blue, black, and a white wire. The red, blue, and black are attached to the back side of the male prongs. The white wire is just off to the side so I'm not so sure what it's for.
Now I can't even get the original light to come on. I also noticed there is no indication that the headlight is on in the gauge cluster. The tail lights work. There are no front turn signals on this bike either, but he left the wires there for them.

Any advice is much appreciated. I'm really scratching my head here.
Thanks
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post #2 of 7 (permalink) Old 5-25-2019, 5:19 PM Thread Starter
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Still no power to headlight. Tried everything I can think of.
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post #3 of 7 (permalink) Old 5-25-2019, 6:02 PM
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If i am not mistaken the bike has to be RUNNING for the headlight to come on.
There is a control that senses voltage off the alternator to turn the headlight on.
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post #4 of 7 (permalink) Old 5-25-2019, 6:31 PM
fog
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Yes you must at least crank the engine ,even if it won't run , for the head light to come on

FOG
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post #5 of 7 (permalink) Old 5-26-2019, 4:52 PM Thread Starter
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Quote:
Originally Posted by bitzz View Post
If i am not mistaken the bike has to be RUNNING for the headlight to come on.
There is a control that senses voltage off the alternator to turn the headlight on.
Can I work on the head light with the bike running? Testing which wire does which for the headlight? How long does it take for the headlight to power on?
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post #6 of 7 (permalink) Old 5-26-2019, 4:54 PM Thread Starter
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Quote:
Originally Posted by fog View Post
Yes you must at least crank the engine ,even if it won't run , for the head light to come on

FOG
I will try that then and wait a couple of seconds then go from there. Does it matter which wire goes to which male end on the headlight? besides the middle one which is ground I believe. It's a headache trying to fix what this previous owner created.
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post #7 of 7 (permalink) Old 5-27-2019, 11:33 AM Thread Starter
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Got it guys! Thanks for the help and input!
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