That's for Illumaglow gauge faces. Converter and dimmer switch. I have a set. They work very nicely. Somewhat of a cluster frying risk though. If the liquid filled tapes going into the tac and speedo crack, it's short cicuit all over everything they drip on. Doubtful you would have a problem with that at this stage but you might want to check on it. If your speedo goes up to 210 mph, those are Ilumaglows still in there. I guess I would take them out if they're in and the tapes are snipped...although it seems pretty unlikely they would cause a problem if they have not already.