Not often you'll hear me say this but you can pick up cheap, decent quality kits on Ebay now for around
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£30.
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Whichever kit you get, I'd make sure it either comes with a relay harness or buy a separate relay harness
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(also available cheap on Ebay).
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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.
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Personally I'd fit a good quality set of xenon bulbs instead eg.
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Philips X treme Vision or Osram Nightbreakers.
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