Disassemble the radiator grille assembly (when present) and the radiator grille cover. Discard the negative battery cable. With sealed beam-type headlights, the headlight bezel and combination light assembly are removed, followed by the four screws that hold the retaining ring, and a removal of the ring taking care of the sealed beam unit. Take out the connector and unplug it off the vehicle. Install the retaining ring and mounting screws by placing the new unit in proximity to the wires so that they can be connected. Lastly, fit the bezel and ensure that it works; as long as the adjusting screws were not adjusted, then the headlight should not need any adjustments. In the case of bulb-type headlights, remove the light assembly at the front side then remove the bulb by removing the light assembly cover, removing the spring and removing the bulb. This is the opposite of de-installation and in the case of the halogen bulb, one should not touch the bulb with bare fingers as the oil will damage it; the bulb can be cleaned with rubbing alcohol in the event of the contact.