Hitchcocks Forum

Hi guys. Checking over my bike today I noticed that both main and dipped headlight beam had failed. Pilot light was OK but what seemed a bit odd was the blue main beam warning light was on all the time. Because BOTH headlight elements weren't working I dismissed bulb failure, but took a look at it anyway. Both elements looked fine with nothing rattling about inside the glass. So I checked all the usual stuff - fuses, earth, all the connectors inside the headlight nacelle. Everything in order. So then I took the pilot light connectors and attached them to the High and Low connectors on the headlight bulb and both elements lit up (proving both elements were OK). Then I connected the pilot light earth to the headlight bulb's earth (common) and in turn to the high and low connectors, and low and behold total darkness! Somewhere between bulb's outside earth connector terminal and where it enters the glass dome it had failed. How on earth (pardon the pun) THAT had happened I guess I'll never know. A new bulb from Halfrauds (sorry Mr H) and all was well. That little lot took all afternoon! Just needed to tell y'all.

Hi RIGGERS---------- believe it or not had exactly the same sort of problem with one of the local lad's Honda PC50 headlights. Turned out to be corrosion on the body of the bulb. Extra value-points for the auld fart ie ME !!

They do like to play games don't they.
In between the April showers I thought I would get a short local run in, checked things out to find the rear light and stop light not working. I had a spare bulb so changed it and all worked. The old bulb looked ok so I put it back in and it also worked fine. Maybe a poor earth, or perhaps it had shook itself apart.
I think they just like the attention.