Now the UBEC should plug into the Receiver. On the side of the Receiver you should see a small S in a circle. This is the Signal posts. The middle is the +V the bottom one is the ground.
(Don't mind the colored arrows here, I've recycled an old picture)
Once the Receiver is powered on you can bind the Receiver to the Hand-held controller: https://groups.google.com/forum/#!msg/antigravitygames/c3gDsF_gjl0/yARSFGNuIwAJ
When the Flight Controller is connected to the Receiver, the Flight Controller will power up. (It will get its power from the +V and ground off of the Receiver)