I bought some button switches to add to my stand so I can easily do things like turn off skimmer or turn on sump light without having to go to the display. The buttons have an LED light to signal that it is depressed and I'm not sure how I can get power to the button, does the B.O.B supply power? There are 3 posts on the switch 2 of which are silver and one is a light copper color. I used the 2 silver posts in wiring and the switch functions properly but has no light. Any ideas?