its a real easy fit u get everything u need, the kit replaces the standard bulb all u have to do is mount the ballast remove the old bulb cut a hole in the cover on the back of the lamp ( the removable cover ) fit the gromet with the wires fit the new bulb plug the correct wires in the plug that went on the back of the old bulb plug it all into the bassat and ur done ...... the kit come with really good instructions if u need them but ti real easy to do about 30 min .......