Stand on the right side of the bike. Shine a flashlight at the right handlebars controls. Right below the brake res. you'll see two wires. Pull one of them off and see if the brake lights go out. If so, it's your front brake switch.
Also on the right side of the bike, look in the triangle area of the footpeg. You'll see a switch with an adjusting nut on it. Wires go in the top. On the bottom of the switch is a spring that pulls the switch when the brake pedal is depressed. You can see it looking from underneath the right footpeg. That's the rear brake switch. You can try disconnecting the wires, but it's easier to loosen the adjusting nut until the switch doesn't have a downward pull tension on it (turn the nut counter-clockwise, or you guys may say anti-clockwise, looking from the top of the switch). My guess is this nut is out of adjustment.
I'd post some pics, but I've got stuff on the grill and I've got to go sample.