Hello, I just am wrapping up my installation in a trailer and it is buried away. I want to use one of these switches to remotely turn on the inverter. Just connecting two wires through a switch to the relay works to turn it on, however, I would like the switch to light up when the inverter is operating. The voltage on the the line is insufficient to light the LED in the switch (it requires 12V). Other than plugging a 12v transformer into a 110V AC circuit, is there a way to get a 12V signal from the inverter when it is operating? Thanks, Phil.