That LED is on anytime you have a trailer plugged into the socket at the hitch. Don't worry about the power draw; it is very small.
I mounted my controller to the right of the steering column. Since I don't use it a lot I have it mounted with Velcro. I put a Molex plug (from Radio Shack) on the wires from the controller, and a mate on the pigtail from Nissan. That way I unplug the controller and pull it of the Velcro when not in use. You can store it in the console, glove box or one of the overhead compartments.
I mounted my controller to the right of the steering column. Since I don't use it a lot I have it mounted with Velcro. I put a Molex plug (from Radio Shack) on the wires from the controller, and a mate on the pigtail from Nissan. That way I unplug the controller and pull it of the Velcro when not in use. You can store it in the console, glove box or one of the overhead compartments.