The Jaguar is a double Circuit Guitar it has two settings, one for playing lead and one for playing rhythm. The switch on the upper wing will switch to the Rhythm circuit when up. When on the rhythm circuit, the rollers next to the circuit switch will control the Volume and tone. While the switch is down the knobs by the input will control the Volume and tone, and you may use the switches on the lower wing to control the pickups. Each pickup has a switch with an off and on setting.
I will explain the switches now using directions referring to your view while looking at the jaguar while you are playing it and looking down at the body (please note the directions will be reversed for left handed players):
Left- Neck Pickup, Middle- bridge pickup, Right- Low end Filter.