I’ve found a source for LED bulbs to go in the OG202 and OG204 Tooke Gauges. The manufacturer says they should have an “LED Life time: Long life, 50,000 hours.”
Starting 1 March 2012, new gauges will ship with LED bulbs. I’m looking for a direct source for these too, so I can sell them at a lower price point. At the moment, I am able to include these LED bulbs without raising the gauge price. I want to keep it that way!