i bought this bec http://www.graysonhobby.com/catalog/gh15ampubec-p-2517.html and the way i wired it was a seperate battery. For some reason this ubec has two wires to go into the reciever but i only plugged in one of the to the bat/bind spot. Do i need to plug in both through a y-harness? when i put in the battery nothing happens. Idk what it could be this is my first time putting a bec in a plane and idk whats wrong