There is a Winegard face plate with 2 coax connectors and a little black switch.
The Coax connector on the bottom is for the TV antenna, the top one is for a satelite reciever connection. The black button turns the TV antenna amplifier on.
Connect your TV converter box to the Coax connector for the TV, and turn the amplifer on.
Then connect the TV antenna input to the output of the converter box. Optionally you can use the red/white/yellow RCA jacks to connect the TV if the TV supports them. The video jacks will give you a better picture.
Hope this helps.