Continuous Duty Grounded Solenoid – 85A, 36V, 3 Studs

12 volt dc continuous duty solenoid switch. Hex nuts and lock washers included. 3 terminals for metal frame ground systems. Cadmium plated, nonbreakable heavy duty housing resists rust, gives long life in most any environment. Isolates starting battery. Assures primary battery power for starting engine and provides secondary battery current for auxiliary power. Full time charging of both batteries. Gives you early reuse of secondary battery.