So if you look at the picture below, with the bulb removed, I have put the black prong into the side earth tag and the +ve prong onto the left hand tab and I get 12 volts. This is the same reading if I put it onto the tab at the base of the bulb holder, or on the end of the bullet. On the RH tab the reading is zero, but that is what i would expect.
But when i flick the light switch to main beam and put the +ve to the RH side, I again get 12v +. So it appears that 12 volts is getting to the bulb holder and is going to earth and that the switch is doing its job. But wtf is the bulb not lighting up on main beam. Note, I have tried several bulbs.
Aaagh help
