im building a Kenworth Show hauler and have to hook up the 12500kw generator, like the truck its Diesel but what im a little confused on is this. i have dual tanks and no switch it pulls from the top of both tanks, on the top of each tank there is both a feed and return. there is no tube on the bottom of the tank to equalize the tanks. so my question is what happens if you were to run one tank out. or the real question if i pull fuel from one tank for the Generator how will the system know one tank is lower and could even empty ? the two feed and return lines seem to go to a distribution box in the middle of the frame and leave in one line to the Engine ?