Radio, Stereo, and Compact Disc: Description and Operation

When the radio switch is turned on, the current flows via a fuse into the receiver circuits of the radio. Also, the current is always supplied to the memory circuits.
A circuit is established and the battery voltage is then supplied to the cigarette lighter when the cigarette lighter is pushed in with the starter switch in "ACC" or "ON" position. When the lighter element is adequately heated, the spring is released to break the circuit.