Instructions
Unplug your Intellivision and television.
Connect the A/V cable that came with your Intellivision a/v connection port on the back of your system.
Connect a coaxial (F-type) to RCA adapter to the other end of the Intellivision cable. Connect the other end of this adapter to the coaxial connection on the back of your television set.
Plug the Intellivision and TV back in and turn them on.