F 350 4WD Pickup V8-351 5.8L VIN H EFI (1997)
Brake Switch (Cruise Control): Description and Operation
The deactivator switch is provided as an additional safety feature in the system. Normally, when the brake pedal is pressed, an electrical signal from the
brake lamp circuit to the speed control amplifier will turn off the system. Under increased brake pedal efforts (22-45 N.m [17-33 lb-ft]), the deactivator
switch will open and remove power to the speed control actuator clutch, releasing the throttle independent of the speed control amplifier. The deactivator
switch is located on the master cylinder on all vehicles except motorhome.
On Motorhome chassis, deactivator switch is located on underside of brake master cylinder.
