Run the pump's negative terminal cable (black) to a suitable ground. Connect the second switch terminal to the positive terminal of the battery. Use the same size wire throughout the entire circuit.

Premium 600 volt cable featuring stranded copper conductors with a moisture resistant plastic insulation Conductors are assembled parallel and yellow with black, red, and green extruded color stripes ...

Premium 600 volt cable featuring stranded copper conductors with a moisture resistant plastic insulation Conductors are assembled parallel and yellow with black, red, and green extruded color stripes ...