John, a lot depends on the type of connections you have on the devices. From the DVD to the TV, use the red, white & yellow. It will go on the "A/V Out" phono connectors of the DVD to the "A/V In" on the TV. The Yellow is for the video signal. Just match the color to the connector.
For sound from the TV. Use the Red & Whitecable. Find the red & white phono connectors "Audio Out". plug it in there and on the DVD, find the "Aux In" or "Audio In" and plug in that one. You will probably have to use the remote for both devices to change the set-up. On the TV use the menu and you'll probably have to turn the speakers off to send the sound signal to the DVD.
On The DVD remote, find the input button or Aux button. I've set up one Jensen TV in the past and it had the most user UNfriendly menu that I have ever seen. Hope this helps.