The bulb in my tach and one of the two in the speedometer were burnt out so I replaced them all with LEDs from Superbrightleds.com It cost about 11 bucks including postage and took about half an hour to do. (First time I've taken the speedo apart) There are two different size bulbs in the Speedo. I like it. Red, blue, yellow, and white are also available. By the way, if you ever need to replace the screw in the odometer reset handle I'd suggest an eyeglass store.
