SOHC.co.uk Forums > CB350/400

headlight beam not working

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wannabay:
Hi
I'm new on here but have had my 400/4 for last 6 years
it's a blue 1977 and has done just over 50k miles
I use it most days for commuting and getting around
As the subject says, my headlight beam has just stopped working. It's not the bulb nor the fuse; no loose wires in headlight case and all earths seem OK
Multimeter on blue and white wires into bulb holder reads only 5v whereas on brown to parking light it reads 10v
switching between hi and lo beam has no effect
Is it likely to be a deterioration/breakage in wires coming from headlight switch to bulb holder?
If so, is easiest option to swap in a new switch/loom?
thanks in advance
gerry

PatM:
Hi Gerry
Firstly, I dodnt know the answer to your problem- beasue you have almost soved it yourself- I hate problems like that- I replaced my headlamp and had such difficulties- I got ther in the end and the found the popular wiring diagram was incorrect. Id use a buzzer and buz out the healight switch to see if you have lost continuity- it means disconecting the wires inside the headlight- but noting in writing which ones go where- which is what I didnt do..

Bryanj:
Bad connection probably at the fuse box,and just cos the fuse looks good don't mean its electricaly good

wannabay:
PatM and Bryanj

thanks and will check the fuse box connection - be easier than swapping switch/loom - we swapped fuse out so that's eliminated

and how do I get an avatar up on this site - it accepted the photobucket URL address for a resized pic of my 400/4 but then said 'image removed'

gerry

SteveD CB500K0:
Never heard of it doing that before.

Can't you upload a resized picture from your PC? That's what most do.

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