The Back Up Light Switch found in the Nissan Xterra activates the reverse lamps when the transmission is placed in reverse. This completes an electrical circuit that powers the reverse lamps. Each Nissan Xterra utilizes a Back Up Light Switch that connects to the gear selector for instant reverse illumination. The Back Up Light Switch is mounted as per the design of the vehicle. It can be mounted on the steering column, on the transmission case, or in the floor console. The automatic model may have a common housing with the neutral safety switch. When the gear selector goes into reverse position, a mechanical or hydraulic trigger inside the switch moves the internal contacts together, which allows the current from the power source to reach the rear light bulbs. When the selector moves to the reverse position, the contacts separate, breaking the circuit and extinguishing the lamps. Each Nissan Xterra uses this simple on-off mechanism instead of timers or electronic modules. The Back Up Light Switch is important for signaling maneuvers. Because the proper operation of lights contributes to better road awareness, a Back Up Light Switch should be functioning in any Nissan Xterra.
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