Use RCA jacks for attaching headphones to your TV, stereo or other sound equipment. Knowing how to connect headphones to RCA jacks is essential for listening to audio through VCRs, DVD players, record players or televisions using headphones. Using RCA jacks eliminates the need for having high-wattage amplifiers to produce sound through speakers. They can also help you save money on electric bills. Materials needed for connecting the headphones to RCA jacks are minimal. With a simple adapter cable costing approximately $5 to $10, connecting headphones to RCA jacks is a quick, simple process. Step 1 Connect the headphone's mm male plug to the mm female input jack on the 6-foot stereo mm Y-RCA adapter cable. Step 2 Locate the RCA audio output jacks on the device you want to connect to the headphones. There are two output jacks. The output jacks are usually located on the front or back of most electronic equipment. Connect the red RCA plug on the 6-foot stereo mm Y-RCA adapter cable to the left RCA audio output jack on the device you're connecting to the headphones. Connect the white RCA plug on the adapter cable to the left RCA audio output jack on the device you're connecting to the headphones. Step 3 Turn on the device connected to the headphones, and turn on the unit to produce sound. For example, if it's a DVD player, start playing the movie. Put on headphones and adjust volume to the appropriate listening level. If the sound isn't working, check all of the jacks making sure they were attached tightly.