[klondike98]

When the original electrolytic capacitors in these sets failed, the repair guys would often just clip the connections to the original cap and then solder a new one into the circuit under the chassis. That Sprague is one of these repair additions. You will want to take the Sprague out, stuff new electrolytics into the original can and wire it into the circuit. As Nick said, the black (negative) leads on the electrolytics connect to the center tap of the transformer.