BATTERY SWITCH

3 and 4 Terminal. Fits all your needs. 3 terminal for metal frame ground systems, 4 terminal has insulated ground terminal for use with fiberglass or other non-conductive materials.  Includes terminal nuts and lock-washers. 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 early re-use of secondary battery.12-volt DC continuous duty.