28-08-12, 10:04 AM
These H7 bulbs (as an example) wont give you any problems: http://www.hids-direct.co.uk/h7-35w-hid-xenon-bulb-set/
However, these H4 bulbs might (or might not) be problematic: http://www.hids-direct.co.uk/hid-h4-3-hi...-bulb-set/
The problem is with the fact that an H4 bulb has to do low and high beam. I believe that one of the new MOT failures being introduced is that low beam must stay on when high beam is selected (probably will only affect new vechicles since it also affects type approval). However, these bulbs select hi beam by actually physically moving the light source from the low beam position to the high beam position. How that transition is handled by the bulb, and by your reflector, will determine how much (if any) grief you get and cause.
Other options for H4 bulbs include stuff like this: http://www.lightinthebox.com/35W---HID-H...52696.html
where HID is used for low beam and Halogen is used for high beam. At those prices is might be worth trying one before commiting to it.
However, these H4 bulbs might (or might not) be problematic: http://www.hids-direct.co.uk/hid-h4-3-hi...-bulb-set/
The problem is with the fact that an H4 bulb has to do low and high beam. I believe that one of the new MOT failures being introduced is that low beam must stay on when high beam is selected (probably will only affect new vechicles since it also affects type approval). However, these bulbs select hi beam by actually physically moving the light source from the low beam position to the high beam position. How that transition is handled by the bulb, and by your reflector, will determine how much (if any) grief you get and cause.
Other options for H4 bulbs include stuff like this: http://www.lightinthebox.com/35W---HID-H...52696.html
where HID is used for low beam and Halogen is used for high beam. At those prices is might be worth trying one before commiting to it.