by the_bluester on Thu Jun 28, 2018 5:00 pm
Assuming you mean a light powered by a normal output? Just hook up the light to whichever output, wire a switch on the steering wheel with one side connected to the switch 0V from the PDM and the other to a spare switch input.
Software wise, you would configure the output to be a "Flash" function active when the switch input is true for an on/off type switch or for a momentary pushbutton that will be push for on then push again for off you would create a toggle function on that button input becoming true, that toggle function being used in place of the switch for driving the output. One button press would toggle the function on, then the next would toggle it off.
I have a "Pulse" function set up in mine which produces a short pulse when the battery power is connected and use that as a reset for all functions or outputs I want to be switched off on initialization.