I'm a good electrician, but no Sparky as that is a derogatory term...
F is the plug for the console lamp power, which will always be illuminated with the key in any position but OFF and CRANK and the door raised to complete the circuit.
B is a general purpose plug for courtesy lights, or anything that will light up when the doors are open or the headlight switch cranked all of the way open. This particular plug is used for courtesy lights on the console.