How do you mean? there's the standard cigarette socket in the console just below the heater (in the F73/78) this is on the same fuse as the radio, and obviously in the same wiring for it.

I'm going to fit 2 or more cigarette lighter sockets next to the back door (for rotating beacons and a torch and other things) in my F73, which will be via relay from a switch on the dash. My Dad has put banks if between 2 and 4 sockets on the dash/side of console previously, but these were wired into the main socket I believe.