Engagement Switch
Switch has three positions and is located in turn signal lever. To operate system, driver accelerates to desired speed and presses engagement switch in to first detent position.
Full voltage is then supplied to transducer solenoid which sets transducer to maintain cars speed at time of engagement. Releasing switch to full out position reduces current (via a resistance wire) to solenoid. This current is sufficient to hold solenoid in activated position, but is not sufficient to activate solenoid. To increase or decrease set speed, driver must depress engagement switch to second (full in) detent position, which stops all current to solenoid and disengages system. Driver then either slows or accelerates to new speed desired and releases switch to full out. Button passes through first detent (activating solenoid at new speed) and moves to full out position where it maintains solenoid in activated position. At speeds below 30-35 MPH, switch in transducer opens circuit to solenoid, deactivating system. Cruise Control will not operate at speeds below 30-35 MPH. Driver may, however, accelerate to speeds higher than set speed by depressing accelerator pedal, and upon release of accelerator pedal, car will resume set speed.