I have an unlit factory 2-wire on-off fog light switch I'm going to install as a relay trigger for my Denali D7s. I want to wire a pre-wired indicator led to the switch mounted in my dash panel that lights up when the lights are on. I can do basic wiring but I am far from an electrician. My assumption is that the LED indicator should be wired to the switched power coming out of the switch and then to ground. Then when I activate the switch the LED will light up. It can't be this simple, am I missing something here? I would appreciate it if anyone with more electrical knowledge than we will chime in.