what lights we talking here? headlights, dash lights? both have been coverd loads. Dec runs led's in his side ligths(and weird lights) and the simple answer is any led bulb with correct connector can be used. not sure on their legality though..
Wierd lights

Lower side lights

I was thinking of putting all LED lights in the rear lights, my mate has them on his mk2 20v and they look good, more responsive than regular bulbs too!
But I have a dodgy rear light that needs hitting every now and again to get it to come on and havent worked out why yet, so decided i'll wait till I can get it looked at first.
I like the idea of being able to leave the lights on for a while and it using barely any power, handy for stopping on the road for 5/10 mins
