Marley M602W Wiring Diagram. Diagram, as shown in figure 5, to connect the power supply. Marley engineered products m602w snap action thermostat. Baseboard Heater Wiring Diagram Thermostat Uphandicrafts from uphandicrafts.blogspot.com Marley engineered products m602w snap action thermostat. Qmark/marley | catalog # m602w | cooper electric part # 88064. These instructions are intended to supplement the.