To update everyone on my dump trailer... Tried to use the remote on my tractor to dump, but the system proved bit clumsy. Sometimes I need a tractor to load the trailer, and dump the load few miles away... So to solve my dilemma I bought a 12v power unit of the ebay. It should dump the trailer ok because the max pressure it generates, is greater than my tractors system. Hopefully, the battery (deep cycle) that I plan on using will last all day with out recharging.