The 2004 Nissan Xterra is powered by 3,275 cc 3.3 liters V 6 front engine with 91.5 mm bore, 83 mm stroke, 8.9 compression ratio, overhead cam and two valves per cylinder VG33E, generating power : 134 kW , 180 HP SAE @ 4,800 rpm; 202 ft lb , 274 Nm @ 2,800 rpm.
The following article discuss detail description, explanation and illustration of 2004 Nissan Xterra lighting system and cable harness routing. This article is divided into following groups: Precautions (precautions for supplemental restraint system, wiring diagram and trouble diagnosis), Preparation (special service tools), Combination Switch (check and replacement), Head Lamp (system description of low beam and high beam operation, vehicle security system, bulb replacement, wiring diagram and trouble diagnosis), Parking/License/Tail Lamps, Stop Lamp, Back-up Lamp, Front Fog Lamp, Turn Signal and Hazard Warning Lamps, Trailer Tow, Illumination, and Interior Room Lamp, Super Multi Junction, Fuse Box, Fuse and Fusible Link.
The headlamp is a semi-sealed beam type which uses a replaceable halogen bulb. The bulb can be replaced from the engine compartment side without removing the headlamp body.
Find more information about 2004 Nissan Xterra Lighting System Service and Troubleshooting procedures here. (source: bebrs.pie-dabas.net)
Also find other Nissan Wiring Diagram here.