I have the same setup: Fillrite and 55 gal tank. I mounted mine on a pallet and wish I had made it bigger to accommodate a battery. I don't think the pump wiring came with any clips and I installed a fuse and battery clips. MAKE SURE YOU PUT IN AN INLINE FUSE to protect your investment. Any auto parts store will have one. I think I used a 25 amp fuse. I sometimes pump 50 gallons into my motorhome in one filling. I have noted that the wiring gets very warm so I know the pump is pulling substantial amps. If you go the battery route, I'd get a 100 amp battery with a 5 amp battery charger/minder to handle the drain without damaging your battery (batteries discharged below 12v can sustain permanent damage). Finally, if you build a pallet, consider lowering the side that the pump is on so you can fully drain your tank. My pallet is level and unless I lift an edge, there is about 5 gallons of fuel in the tank when the pump starts sucking air. Sometimes you need that last 5 gallons! I also build walls on 3 sides of the pallet to protect the tank from dents when moving it around with my tractor. I hope you got the auto shutoff fill because it sure is nice to not have to worry about spilling fuel. Finally, the fuel volume pumped display is a really nice add on even though it is expensive. It keeps up with how much you pumped and how much is left.