Monaco coaches have a "salesman" battery cutoff switch as you walk in the door. The solenoid it controls is notorious for failing at the most inopportune times. It serves NO purpose other than turning off all 12v to the interior of the coach, so salesmen would NOT run down the batteries by leaving things turned on. The solenoid is located in the electrical compartment under the driver. It is the large solenoid at the bottom of the compartment. Remove the large red wires on either side and bolt them together and you will have your 12v back. Most of us have removed the solenoid and thrown it away.
