RE: charger/switch
Ok, first of all, the switch should be off when you are charging. Now for the leads on the switch. On the side that has only one lead, this goes to the battery connection on your receiver. On the side of the switch that has two leads, one lead goes to your battery and the other one is a recharge jack. You can use it to connect your charger to the battery for recharging without having to dig your battery out of the plane to do so. A lot of people will use a switch mount that also has a receptacle in it for a recharge jack. This will let you charge your battery by hooking the charger to the side of the plane, and it will also let you hook up a multi-meter to check battery condition at the field while the lane is assembled.
This link is to a Great Planes jack available from Tower Hobbies:
[link]http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXJ778&P=ML[/link]
This picture is from their site, you can get a better idea of how it looks.
Ken