I am looking for some help adding a BEC for my Savox TG Servo. I will be running a 6.5T Tekin motor with RSX ESC. I have a Spectrum RX (DX4C TX, 1 of the RX is 4 channel the other 3 Channel. (not sure if it makes a difference or not.

Which BEC do I need? Can someone link one from TowerHobbies? Also how do I wire them up? What goes where? Thanks for all the help!