Headrest DVD Player Cigarette Lighter Power Supply Cabe +AV Cable- SMALL END&hellip; DIRECTLY COMPATIBLE with Autotain Dream, Hero, Edge and Mega headrest DVD players. You can plug the cable directly into the headrest power cable for a working power and a/v connection. INDIRECTLY COMPATIBLE with all other headrest DVD player IF YOU STILL HAVE THE ORIGINAL POWER CABLE and are simply looking to expand to a cigarette plug power source for easy connectiity. Note, the a/v cables will not be compatible with non-Autotain branded headrests, only the Cigarette power plug will be compatible if you still have the original power cable. If you don't have the original power cable for non-Autotain headrests, this cable will NOT be compatible. The cable end may be the same size, but many Chinese branded headrests use the same cable size but have the wires in a different order than Autotain inside the cable. Cigarette plug included. 1 cable will power 1 headrest. If you wish to power 2 headrests, use 2 cables. We include special instructions on how to connect to non-Autotain branded headrests using this cable, the included cigarette plug and the original power cable that came with your non-Autotain headrests.