4HI to 2HI Selector Switch Input

4WD Selector Switch Wiring Schematic:

OPERATION
If the transfer case is in 4HI and the operator presses the 4HI area of the rocker switch, the 4HI contacts of the selector switch close, connecting circuits 141 and 1564 and furnishing 12-volts to pin C5 of the Transfer Case Control Module (TCCM) connector. The 12-volt signal at pin C5 commands the TCCM to signal the electric-shift motor to shift into 4HI. Again, the contacts return to the open position as soon as the switch is released.