We recently came into possession of an old rotary Western Electric Mod. 500 that appears to be in working condition, and want to hook it up to something.
Ours is the same color as the one in the picture.
Look inside the phone jack, locate the red and green wires that are part of the jack. Connect the red and green wires on the phone cord and connect them under the red and green wired screws of the jack. You should have dial tone.