Battery Switch, 4 Terminal, 12 Volt Continuous Duty - Insulated

Isolates starting battery. Assures you of primary battery power for starting engine and provides secondary battery current for auxiliary power. Fits all your needs. 3 terminal for metal frame ground systems. 4 terminal battery switch has insulated ground terminal for use with fiberglass or other non-conductive materials. Cadmium plated, non-breakable heavy duty housing. Resists rust, gives long life in most any environment. Includes terminal nuts and lock washers.