Installing Compressor & 5Gal Tank

[GotSandH3]

hey people...started a new lil project. Im installing an onboard compressor and 5 gal tank.... Im mounting the small little compressor in the right rear storage compartment....Across from the SUB.... Anyone know where I can find a constant 12V power back there.... I tried plugin it into the Cigar Lighter but the fuse blew after about 30 seconds of running the pump... The max amps on the pump is 20 amps....and the cigar lighter fuse is 15 amps.... Can I just replace the fuse with a 20amp fuse?? Id only be running the pump off of it....Or are the wire guages not approved for 20 amps?? If i cant do that, where can i do it without running wires all the way up front to the battery?? Thanks!!