If you already have HID lights and they are not working it is usually not the bulb. More often than not it is the balast unit that goes bad. Also check any in line fuses for corrosion. The bulbs have no filiment and are just arc chambers.NCCCC1 said:Does any body out there know where I could get HID replacement bulbs for my 2000 LT's High and LOW Beams at a good price? Suggestions appreciated.