My 753 has a 1/2" x 1/2" button w/ two small bulbs on an aluminum plate just below the key/start switch that you'd push to energize the solenoids that control the flow to the couplers. The trigger in the front of the right stick opens one way for continuous flow and needs to be tripped again to stop that flow when full range of movement is reached or there will be a strain in the pump. That's w/ a log splitter or grapple on mine, I guess a broom or breaker would just keep flowing. Then on the rear of the stick is a rocker/paddle that provides flow when moved ether direction. Things have changed for different series,hope that helps.I purchased a bobcat 753. I was wondering if someone could tell me how you work the auxiliary controls and what are the few buttons on the joysticks? I cannot find anything anywhere in regards to this thank you.