Not often you'll hear me say this but you can pick up cheap, decent quality kits on Ebay now for around

£30.

Whichever kit you get, I'd make sure it either comes with a relay harness or buy a separate relay harness

(also available cheap on Ebay).

These connect the HID ballasts directly to the battery and avoids low voltage problems that can cause the HID bulbs to flicker or not fire up at all.

Personally I'd fit a good quality set of xenon bulbs instead eg.

Philips X treme Vision or Osram Nightbreakers.
