You could probably run it off the cig lighter again as long as it doesn't draw too many amps.
I have wired up two add on fuse panels with 100amp breaks in line. One is mounted to the fire wall in the engine bay on the passanger side and the other is mounted under the dash on the drivers side kick panel. I have the 100amp breakers bolted to the top of the relay box under the hood (yeah, I have to disconnect the breakers to get to the relays, but really how often does one have to replace a relay?).
I have wired up two add on fuse panels with 100amp breaks in line. One is mounted to the fire wall in the engine bay on the passanger side and the other is mounted under the dash on the drivers side kick panel. I have the 100amp breakers bolted to the top of the relay box under the hood (yeah, I have to disconnect the breakers to get to the relays, but really how often does one have to replace a relay?).