Re: cigarette plug in back.
Put a switch in front run it to the back tap into male plug on accy.
You can just tuck in a wire from front to back on passanger side without removing panels. 
Or you could tap into a RAP circuit with a relay and run the wire to the back the same way and power would work off the key . 
Tap into ignition wire with a relay and it will work only on key foward ,run position.
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