What lights have you got, projector or N1's?
If you've got projector lights you'll need H3C bulbs for the dipped beam, not sure what the main beam are.
The standard dipped beam are totally useless, I've been using some uprated ones I bought off ebay, normal input, (50 or 60 watt whatevers the normal), but 100watts output, the only problem is they get very hot on the projectors and don't last long, approx. 6 months.
Alex B