Patent ID: 6927962

Claim:
A submergence-responsive switching member driving circuit, comprising: a driving unit having two current input-output ends, for driving a switching member of a vehicle so as to open or close the switching member depending upon a difference in direction of a driving current that flows through between the current input-output ends; a first power terminal for supplying the driving current; first and second relays having exciting coils and switching contacts, which, so long as a control current flows through the exciting coils, connect each of the current input-output ends to the first power terminal respectively by means of the switching contacts; and power breaking means for breaking, when submerged in water, the supply of the control current to one of the exciting coils, wherein the power breaking means have a power supply line for causing the control current to flow and a ground line, and wherein the power supply line and the ground line are disposed adjacent and in parallel to each other in a state in which conductors of the power supply line and the ground line are exposed respectively.