Go to a local electronics store (or, if you must, Radio Shack) and purchase an adaptor that plugs into a cigarette lighter socket (I think AA uses this type of power).... just make sure the output matches what is written on your AC adaptor that came with the DVD player; (i.e. 9 volts, whatever amps). The electronics store should have various connecter tips available, one of which should fit your player. Then to connect to EmPower, buy one of
these either from Magellans or do a Google search for "empower connector".