nitrosportsandrunner

there is a small black plug that came with your radio. You plug this into the "bind" port (it says where on the it) on the receiver. Then, turn on the truck 1st (the LED on the receiver should blink very fast).....with the truck on, turn on the radio WHILE holding down the button that is between the throttle and steering trim nobs (the button is reassessed).....the LED on the receiver should go solid.
Now, turn off the truck....then the radio. Remove the bind plug and turn the radio on, then the truck and they should be bound.

You can search youtube as there are videos showing this process as well. Just look for redcat or flysky binding.