Hoozie - yes, those are the lights. The plug isn't anything special, just the 2 small fuses in it, typical christmas light plug, like in the pic above. The LEDs themselves control the color changing. I've contacted multiple Christmas light companies and no one will tell me where they get their supplier gets components from or will provide me any information. Of course they are more than happy to sell me a string of lights! Not spending $25 plus to cut it up and "hope" it will fix my set. All I want is the plug end to a couple inches of wire part the rectifier! There are 36 total, I may have tested with the 9v somewhere along the string but I do remember them lighting up and changing color. Otherwise, I would have tossed them. Yes, the company I bought them from mentioned a full bridge rectifier. Can you tell me how to make one and what components I need?