RAM 4500 Chassis Cab Truck 2WD L6-6.7L DSL Turbo (2008)
As the switch moves through its linear motion contacts slide across a circuit board which changes the resistance between the range sensing pins of the
switch. A power supply on the instrument cluster provides a regulated voltage signal to the switch. The return signal is decoded by the cluster, which
then controls the PRNDL display to correspond with the correct transmission range. A bus message of transmission range is also sent by the cluster. In
REVERSE range a second contact set closes the circuit providing power to the reverse lamps.