Headlamps turning off when Hi-Beam engaged
I recently replaced my old Hi-Beam headlamps after one of my old ones died with 5-3/4'' Xenon Conversion Headlamp Bulb (High Beam).
Put them in, switched on and aligned them and all was good.
When I finally got around to driving and needing them I engaged the Hi-Beam footswitch and all of the headlamps went out! Not great considering I was driving at the time.
After I disengaged the Hi-Beam switch my main headlamps came back on.
The only difference I can see is the replacements have three pins rather than two but they worked fine when I first put them in, hence why I was able to align them.