Battery Isolator 70-2000All Balls Battery Isolator with Wire Kit. Automatically isolates secondary auxiliary battery from primary battery for running accessories Prevents primary battery from draining when vehicle is stopped while maintaining a charge in both batteries when vehicle is running Kit includes battery isolator module, wiring kit, mounting hardware Included Items: (1) Battery isolator module (2) 2" Long screws (2) 1 2" Long screws (5) Cable ties (1) Blue ring