Pre-EPA10 Battery Isolation Switch
The optional battery isolation switch (see ) is located on the cab floor outboard of the driver's seat, on a bracket near the driver-side kick panel below the dash, or near the battery box. The battery isolation switch disconnects the power to most cab circuits and engine power wiring. Use it whenever the vehicle is to be put out of service for extended periods.
Important: The battery isolation switch does not completely isolate the batteries from the electrical system. For service operations that require that the batteries be disconnected, always shut down the engine and remove the negative battery cables.
Note: Whenever battery power is disconnected, clocks, radios, and the Datastar contrast must be reset.
