Bluewater Off/On Combine Battery Switch w/o Base - Surface Mount - Red [9800-011-11] Marine Plumbing & Ventilation | Engine Cooling Pumps Boats – dual battery systems

Boats – dual battery systems (starter + house)

Ultra-strong 2” nylon webbing waist belt

Blade Style LED Indicator Fuse Block with Negative Bus Bar - 6 Circuit

users don't love this amazing light

Bluewater Off/On Combine Battery Switch w/o Base - Surface Mount - Red [9800-011-11] Marine Plumbing & Ventilation | Engine Cooling Pumps Boats – dual battery systemsOff On Combine Battery Switch without Base Surface Mount Red The Dual Circuit Plus switch builds on the standard dual circuit configuration by adding an emergency parallel function. This allows both circuits to combine instantly in the event of a start battery failuredelivering backup power when you need it most. Smart Power Management Provides secure isolation during normal operation Emergency parallel mode ensures dependable backup starting power