What Is the Proper Gauge Wire for a Boat Ignition?
The proper gauge wire for a boat ignition depends on the total length of the wire run and the current carried by that wire. Generally the wires that connect the battery, ignition switch and starter solenoid can be of a small or moderate gauge. These wires need to carry only enough current to activate the solenoid, which is a relay that turns the starter motor on and off. The wires between the battery and starter motor, however, need to be quite large, for they carry an immense amount of current.
