Beachcomber Hot Tub Wiring Diagram. The 4 wires are line 1, line 2 (usually black. Beachcomber hot tub wiring diagram by ranu posted on november 27, 2020 it's sole purpose is to shut off the heater if low pressure (low water flow) occurs. Hot Tub Wiring Diagram Wiring Diagram and Schematic Role from diagram.tntuservices.com If […]