I have a clock that eats up the batteries it runs on pretty quickly, and so I would like to convert it to run on DC power. The clock has a total of 2 D batteries, 1 in each "foot" of the clock (they are separate). There is a white wire that starts at the + side of one battery, goes over to the + side of the other battery, then into the motor. There are 2 black wires that connect to each - side of each battery and then into the motor. The 2 black wires do not connect to one another (unless it is inside the motor assembly). Can anyone assist in getting me started? Thanks in advance.