Very good blue lens driver, with a blue-bulbed running light. Good replacement for a broken similar or other uses (like a 'BACK-OFF!" light for under the trunk of a GL1800). White is main power, yellow is runner light power, black is neutral on both bulbs. It's mate was blown out by a rock on the Alcan highway before the bike went down for good. The make is unknown, but it sure puts out light well.