RAM 3500 Truck 2WD V10-8.0L VIN W MDC (1999)
Lock Cylinder Switch: Description and Operation
SYSTEM OPERATION
The door lock cylinder switches are mounted to the back of the key lock cylinder inside each door. They are normally-open momentary switches
that close to ground only when the lock cylinder is rotated to the unlock position.
The door lock cylinder switches cannot be repaired and, if faulty or damaged, they must be replaced.