On my main electrical panel, I have a red light for when the propane is on, a green for when the bilbe pump is on, and an amber for when the engine start alarm is on. The bulbs are 7/16 inch tall overall, with the glass part being 7/16 inch tall and the metal base being 5/16 tall. The threads are very fine. The width of the glass is 7/16 inch, and the width of the metal screw base is 5/16 inch.
Any idea where I can get replacement bulbs? There are no markings on the bulb, or the fixture that they screw into.