OK here is the deal with HID Lights:
The hummer H2 has single bulb 9007 halogen lights. The bulbs have two filaments, one for low beam and one for high beam. The light source position, (foward or back) determines the beam pattern eg high or low. The reason existing HID kits only had low beam is that by nature there is only one filament. The problem is the light source is in one position-the low beam. The answer is that for a single bulb setup there needs to be a system to physically move the bulb foward and back. Catz (
WWW.fet-usa.com, look for "new products") is introducing just such a system with a solenoid to move the bulb back and forth. This is a simple, reasonably priced, plug and play upgrade. I hope this helps you guys.