2002 Nissan Frontier Owner's Manual - Page 221

● Aiming is not necessary after replacing the bulb. When aiming adjustment is necessary, contact an authorized NISSAN dealer. ● Do not leave the bulb out of the headlight reflector for a long period of time as dust, moisture, and smoke may enter the headlight body and affect the performance of the headlight. 6. Install the new bulb in the reverse order of removal. ● Be sure the lip of the bulb socket contacts the headlight body. ● Cover the opposite headlight and ensure the fog lights (if so equipped) are turned off. ● Adjust beam pattern until cutoff line is positioned at the same height off ground as bulb center (on H-line). Adjusting the headlight aim Before performing aiming adjustment, make sure of the following: a. Use an aiming wall screen. b. Keep all of the tires inflated to the correct pressure. Replacing the headlight bulb 1. Open the hood. 2. Disconnect the negative ( ) battery cable. 3 Disconnect the electrical connector from the rear end of the bulb. 4. Turn the bulb retaining ring counterclockwise until it is free from the headlamp reflector and then remove it. 5. Carefully remove the headlight bulb. Do not shake or rotate the bulb when removing it. DO NOT TOUCH THE BULB. c. Place the vehicle and screen on level ground. d. See that the vehicle is unloaded (except for full levels of coolant, engine oil and fuel, and that the spare tire, jack, and tools are stored). Have the driver or an equivalent weight placed in the driver's seat. 1. Open the hood. Turn headlight low beam on. 2. Adjust the vertical aim by turning the adjustment screw. 8-32 Maintenance and do-it-yourself