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Hey all, I am in the process of building a self filling steam boiler based on the @Telluride design, and I was hoping someone could clarify the wiring diagram on this level switch for me.
Red is the common 12v for the LED and the circuit, and white completes the LED circuit, so then do I run the black to my water-in solenoid (which has one pole wired to the -12vdc source?). Here is the wiring diagram to make it more clear than the picture:
Second, on both diagrams it shows a load or resistor at the LED, how do I tell which type of resistor to use?
I know this is a basic question, but my brain has been turned to mush by this head cold and just want to confirm. Thanks all!