jumper pack plug install for 2012 prius c

just installed a jump plug under back seat to jump the 12v battery if it ever goes dead or somethings left on .my car came with no jumper post on the fuse panel .i used a few items off of amazon.ca and some other connectors from auto parts jobber pico brand .all connections where crimped and soldered .car ran without 12v battery on just the jumper .no holes were drilled just bolted everything up .now my wife who drives this car can jump start her car by her self .