is it possible to convert the headlight system to HID on a gs300 that is not equiped with HID headlight system, i have two ballast off a 98 GS400. How do i go about hooking them up?

 

The headlight housings are different and the electric connectors. You can however get the housings, ballast, and hid bulb and do the conversion.

You won't get the auto leveling feature on your conversion because it uses 2 sensors mounted at the left wheels for it.

 

well if you are really inclined to do it, you can get two hid bulbs, get the 9006 rebase from ebay, and it will work. you will also need to spice your stock connector wires to fit it on the ballast.

or if you want an easier route, just get the 9006 hid kit on the market, going for around 500 bucks