OK.... Back again, I think I have this right but wanted some extra opinions! As I have posted I am installing 12 VDC headlights & I plan to used a lighted 30A switch. Obviously the switch needs a ground (it has a plastic case) so the light can come on when the switch is closed. The only wiring diagram is very small on the back of the switch. There are two opposing tabs on top & bottom of the switch & then a center tab that sticks up higher than the other 2. If I am interpreting this correctly, the 12V+ power comes in on the bottom tab, the ground is on the opposing tab & the load, or 12V+ that goes to the light hot wire when the switch is closed or "on" comes from the middle. I will probably do a test wire prior to installation before I commit to rigging it all up. Thanks for any input!