This is a FURNAS Part number D71221-32 Dual voltage coil 60 Hz 208-240V, 50 Hz 190-220V, 25... 115V and 60 Hz 440-480v, 50 hZ 380-440v, 25...230V. The wires are set up and the relays for the higher voltage as it is to run a 3 phase motor on an air compressor. The magnetic starter is wired with a selector switch as Auto-(Pressure)- OFF- Hand (manual) with contacts as normally open. The pressure switch is normally closed. I am having trouble wiring in the switch/starter. I am not sure which screw on the relays that I should be tightening, V or W. I believe it should be wired as L1 to the off on the selector switch which controls the pressure switch on the auto side. The Hand (manual) and the load side of the auto switch should go to the coil, after that I am confused as to where the L2 and thermal overload relay are in the box to complete the circuit to start the magnetic coil.