OK it looks like I've got an intermittent fault on my 50w HID retro-fit kit. The nearside dipped beam keeps going out - sometimes over bumps and sometimes when it feels like it

I'm guessing this is either bulb or ballast but not sure which so any easy way of checking or am I best just buying a whole new kit?

Car is an 07 and coded so no need for a canbus kit but I have heard 'Londoncolour' stuff mentioned as eing decent quality before now...

Any recomendations?

edit - just thought if I swap the ballasts over and the fault swaps sides does the it's the ballast yes?

Edited 1 April, 201313 yr by skomaz

Swap the ballast over, if the fault follows then that is the issue. If its the bulbs, I would say change them in a pair as there is some variation in colours across different brands.

I can vouch for the Londoncolour kits. For £28 they are great.

swapped the ballasts today and still the same side with a fault so I'm guessing a new set f bulbs are in order...

Had a mare with the white retaining nut as well - it uscrewed the threaded plastic bolt from the headlight (the one that aligns the headlight to the bodywork) when I undid it. Ended up trying to glue the alignment bolt back in place and then re-align the headlight after refitting...