I wonder if someone can confirm the characteristics of this switch for me. When ignition is on, I assume the switch is off. When the car is put in reverse, does it automatically come on? Or do you have to manually turn it on if you need it when reversing? How about switching off, does it stay on until you switch it off? (and am I right in thinking it has a little orange indicator light in the switch?) Sorry for all the stupid questions, I'm just trying to clarify how it works.