spoon-eg

ok first i have Mcculloch hid kit ,,before one of my bulbs use to turn off when it was fully charge,,so i thought it was my bulb,so i bought a new set of bulbs by britetstar now both of them turn off when its fully charge,,,what do u guys think the problem is,,,i heard from a friend i should run a relay with my kit,,,but i thought it should b just plug and play,,,,please help