If the TV has an audio output that is where the transmitter for the wireless headphones will be connected. If your TV doesn’t have an audio output then your other options will be to use either a stereo VCR, Cable Box, or Satellite box. Depending on what is connected to the TV, one of the listed components will have an audio output. If you use cable or satellite and have a box, they have an audio output. Basically just connect the headphones to the output on the back of the box and you’ll be good. If you don’t have either, but happen to have a VCR connected to it, then just connect the transmitter to the audio output on the VCR and when you want to use the headphones just turn on the VCR, sound will come through it and you’ll be good there too.
Hope this helps.