Directly to the battery, it would run at one speed (full speed?) and would over run your regulator. I am keeping the stock FPCU (ash mod) connected to the haltech so i can keep the 3 speed functionality... Plus i am -6 lines and nothing stock in the engine bay. I like the idea of using the radium higher flow venturi pump to syphon fuel from the passenger side of the tank. If i could start over with all of this i think I'd just use a fuel cell bulkhead on each side of the tank connected to two external fuel pumps :(. Thanks for the info!