solved: headlamp main beam not working

[U_W v2.0]

so heres the symptoms.

possition lights = working
dip setting = working
full beam = not working
(possition lights on throughout all settings)

i've replaced the switches, left and right ones. no resolution to the problem.

it has a new bulb. ordered another bulb so i can definatly rule that out but for looking at the bulb it seems fine, the fillaments are all there.

rear tail light works as expected on all settings

indicators all work as expected too.

any ideas?

aboves fixed. new problem below though reguarding tail light
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[herulach]

have you got a multimeter?
Stick it in the pins on the headlight connector and throw the switch. If the main beam is getting 12V its a bulb problem, if not then its somewhere else, start testing at the switch, if that works then my guess would be a break in the wiring somewhere.
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YBR 125>FZS600

[U_W v2.0]

okay, i'll report back when i've had a chance to do that.

although i did run a light probe (like a screw driver but with a light in it and a wire) and the wire which runs down to the lamp and back up to the other switch, in this case, a blue wire with a white stripe, had absolutely no voltage in it at all.

so i dont think the main beam is getting the voltage needed.

but to be honest, im pretty sure if that had no voltage the dip wouldnt work either?
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[cb1rocket]

possible a loose wire connection, more likely, multimeter testing time

[U_W v2.0]

definatly not a "loose" wire.

possibly a broken wire though.

i went over all of the connections in and out of the headlamp and the switches prior to replacing them. and against after i did.

i'll check the systems over with a multimeter tomorow.

unfortunatly for me, i've been up all night and now i really must go and get some sleep
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[Ichy]

[Taught2BCauti...]

You need to check what is happening at the switch - and your screwdriver/circuit tester will do just fine, with one side connected to permanent earth and the other as a probe.

Check the wiring at the bulb holder and see if you can physically trace it back to wherever it goes.

Its also possible that you have a duff bulb - even though the filaments look sound!

I have seen some strange wiring setups on Chinese bikes - one that I looked at had the low beam fed from a changeover relay so that it came on with the ignition. The main/Dip switch was just an on/off switch that worked the relay!

I have also seen examples that had a separate fuse for main and dip, and one that had a dual filament bulb fitted, but no wiring for the high beam - and it looked like it had left the factory like that!
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Honda Varadero XL125(V8)
www.TheFutureIsHere.eu

[U_W v2.0]

permenant ground?

like the ground on the battery?
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[cb1rocket]

[U_W v2.0]

well i ran the multimeter with the - probe on the - battery and theres 10.5v going into the dip and 12v on the high beam setting at the terminal in the bulb.

so dud bulb?
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[U_W v2.0]

okay so it turns out the contact strip wasnt contacting the bulb.

bent it a little and now it lights up on full beam.

this bulbs a xeon white 12v 35w bulb with 2 fillaments inside.

one lights up on dip and the other lights up on main beam.

is that right or should BOTH be lighting up on full beam?
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[U_W v2.0]

okay, now i have a whole new problem.

my tail light isnt working now. and the dash lights are wierd.

the brake light for the rear wheel and front wheel both work

the possition light works in the tail.

but if i go to dip or high beam my clock lights turn off and the tail light doesnt work, although the brakes continue to operate it.

i've ran a multimeter at the rear and the powers just being cut out when changing to high or dip (except for the brakes, they still operate the light)

this ones really confusing me now.

i tried removing the front lamp bulb to see if that rectified it but made no difference

im having trouble locating the wires in the headlamp which will go down to the tail light. mostly because the wires dont match up correctly so i may have to remove the tank and cut open the loom in order to trace the tail light wires. which i REALLY dont want to have to do because i dont have anything to replace the black sleeve with

oh and all 4 indicators work fine throughout the bike.
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[U_W v2.0]

any ideas?

should probably mention the battery is fine and fully charged putting out a steady 12.5v
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[Ichy]

Sounds as if there is a short somewhere. Most likely seems to be the new switch and its loom. Maybe something is touching the bars inside the casing?
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https://www.metacafe.com/watch/1972097/how_to_behave_on_a_forum/

[U_W v2.0]

i've taken the switches apart and allowed them to hang down, clear, not touching anything and the problem persist so its not a short in the switches also wouldnt that stop the front lamp from working too? seeing as the front lamps working i wouldnt have thought it a short forward of that.

next thing to try?
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[Ichy]

Welcome to the world of Chinese electrics
Best advice is to try finding a wiring diagram.

Run a piece of wire from an earth to the tail light. Same again with 12v. The tailight, clock lights and maybe other stuff are on a different circuit than the headlights. Is the position light still working?
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https://www.metacafe.com/watch/1972097/how_to_behave_on_a_forum/

[U_W v2.0]

possition light is still working.

everything is working except the tail light and clock lights on dip and full beams.

i have a wiring diagram.

heres a link to it

https://i813.photobucket.com/albums/zz55/reeve1987/HN125-8WiringDiagram1.jpg

but i cant find a fault anywhere
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[Ichy]

It's either the bulb, bulb holder or the wire is broken somewhere. Try the wire as suggested.
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https://www.metacafe.com/watch/1972097/how_to_behave_on_a_forum/

[U_W v2.0]

okay i'll give it a go tomorow (bit late now)

hopefully theres be more suggestions to try overnight lol
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[U_W v2.0]

fixed it.

thanks for the help people!

turns out it was a bad connection just not where i was looking.

thanks again everyone.
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