Clock: Description and Operation

Circuit Description

Battery voltage is applied at all times to the digital clock from power connector (18) to provide clock memory. With the ignition switch in ACC or ON, battery voltage is applied to the clock through fuse 27. The digital clock lights up and displays the time.

With the ignition switch in ACC or ON, battery voltage is applied from fuse 23 to the cigarette lighter. When you depress (push) the lighter, the lighter element completes the circuit to ground. When the element becomes sufficiently heated, it is spring-released and the circuit opens.