Perko Dual Battery Selector Switch - Cup Mount [8521DPC] Trailering Rope Range - 10mm -

Rope Range - 10mm - 14mm (3/8" - 9/16")

Length - 4 21/64" (110mm)

UPC: 753759123543

You simply cut off the cord plug on your RV/Boat 30 AMP cord

Turnbuckles

Perko Dual Battery Selector Switch - Cup Mount [8521DPC] Trailering Rope Range - 10mm -Dual Battery Selector Switch Cup Mount The Perko Dual Battery Selector Switch allows the addition of an extra battery for accessories. This switch provides the flexibility of selection between batteries or combined operation of both batteries in parallel for starting or charging. It can also serve as an emergency main disconnect switch in the event of an electrical problem. All models are make before break design and are ignition protected. Features: