Cruise Control Systems: Description

The Electronic Cruise Control System uses electrical sensors and components to regulate the vacuum operated servo, which in turn controls the carburetor throttle linkage. The system includes the following: an instrument panel control switch; an engagement switch in end of turn signal lever; a speed sensor on the speedometer; two brake release switches (one vacuum and one electrical) on brake pedal bracket; an electronic control module on back of instrument panel; a relay under the instrument panel; a vacuum servo (power unit) near carburetor; a vacuum control valve on servo; a solenoid valve on servo; a throttle control bead chain (DeVille and Fleetwood V6 models), combination chain and cable actuator (DeVille and Fleetwood V8 models) or rod actuator (all other models), and various vacuum hoses and electrical wiring harnesses.