1998 Toyota 4Runner Owners Manual - Page 329

4RUNNER (1998) 2. Release the bulb retaining spring and remove the bulb. Install a new bulb and the bulb retaining spring. To install a bulb, align the tabs of the bulb with the cutouts of the mounting hole. -Parking and front side mar er lights 3. Install the rubber cover, and snuggle on the boss. Insert the connector. Make sure the rubber cover fits snugly on the connector and the headlight body. Aiming is not necessary after replacing the bulb. When aiming adjustment is necessary, contact your Toyota dealer.