Take a look at the FSM page 90-111 (page 116 of the PDF that I've got)
It looks like both front and rear accessory sockets are are activated by the accessory socket relay..... if you wanted to get crazy, locate the relay, and then jump pins 1 and 3 with heavy wire that will then run power directly to both accessory sockets...
Looks like the accessory sockets have a 15 amp fuse on them... FSM says it's fuse number 14.... guessing that the relay is in the junction box near the battery.
or... another, even better idea.... add a 2nd relay that is only activated by a switch.... and have that relay do the jump between pin 1 and 3... then, you'd have power anytime the switch is on, or anytime the car is running..... and you don't have to worry about feeding 12 volts back into systems that might have parasitic drain.
Ok.... just noticed this in the FSM.... on the same circuit as the accessory sockets, and branching off of the front socket is the lighting monitor/key reminder/seat belt warning buzzer, heated seats, heater??, and the rear diff lock system. I'd be most worried about the drain on the batter from the heated seats if you did add a relay that made those hot....
I guess you could add another relay on the circuit that branches off the front accessory socket so that the list of things I noted about is only active when the key is in the right position....
anyway... look on page 90-111, you'll see it.... the earlier pages in section 90 tell you where the junction boxes are located.