When the switch on the radio is off, the radio should be off regardless of whether or not the radio is receiving power. One cheap fix would be to put a switch in the power lead to the radio and mount the switch in a convenient location.
When the switch on the radio is off, the radio should be off regardless of whether or not the radio is receiving power. One cheap fix would be to put a switch in the power lead to the radio and mount the switch in a convenient location.