installed a set of HID's for the headlights and fog lights. The headlight are easy. You have to disassemble the connector on the factory harness to expose the wire ends. Then make a new connector with the blue crimp on (female) connectors. Pretty simple the fog lights are even easier. The kit I got came with the proper connector. So unplug the factory bulb. Plug in the new connector to the factory connector and your done. HID fun.