This is not a factory installation kit, so you cannot use the fusebox. The lamps fit like a glove. Installation is easy, but use battery (+ positive wire) service connector just outside the fusebox, and (-) ground lights to the ground wire in the engine compartment beside the fusebox. You can find installation instructions on the internet. Just substitute fog lamp kit wire colors, because instructions may not match lamp kit colors. There is an easy entry into cab just above the brake pedal.