Abstract: A truck driver's wake-up device comprising a conventional mechanical alarm clock constructed from metal parts which are electrically conductive and having therein an alarm trip which moves in a predetermined path when an internal alarm system in the clock is actuated, a support for mounting the clock thereon, a high output buzzer capable of producing a loud alarm mounted on the support, the buzzer having first and second input leads for actuating the alarm when an input voltage of 8-16 volts DC is impsoed across the leads, a standard automotive cigarette lighter adapter having first and second outlet leads for providing approximately 12 volts DC output when the adapter is inserted into a standard cigarette lighter socket, the first output lead from the adapter being grounded to the clock, the second output lead from the adapter being connected to the second input lead to the buzzer, a non-conductive insulator plate connected to the clock adjacent the alarm trip, an electrically conductive spade connector atta