How to make an actuator remote control?

remote_control.jpg (116945Bytes)
So basically im new to robotics and i am trying to teach myself everything. im working on a project, i have a sabertooth 2x25 that controls two motors and it makes it remote control. im trying to add a electric actuator to it. i do not know how i can hook up the actuator so it can be run off the same remote control? i added an attachment of everything.