Take the end of the bulb(outside) and grab it with some channel locks from the back. Turn it until the soldier that holds the bulb into the lens casing brakes free, at this point the bulb will spin in the headlight lens. Now smack it by the prongs good a few times with the channel locks until the bulb brakes inside the lens housing the just pull the busted bulb remains out and shake or vacuum the broken bulb glass out. Now a buy a mid 1990's Chevy truck bulb, it has a o ring on it and it fits the hole perfect. silicone it after its in. Now just cut and crimp female wire connectors on the harness and plug onto the bulb. QTS are 6 volt, if you swap out the stator ass. out from a razz its 12 volt and will run the halogen bulbs better.