Steve,
Thanks for the suggestion but the lights I am looking for are apparently made by SOLICO (Sorenson Lighted Controls, Inc.). These are rectangular lights which mount in the center dash panel and are either amber or red. They are roughly 7/8" wide and 5/16" high. Looking at the Beaver Service Manual they are labeled BIC Amber 2112-84 and BIC Red 2111-84. These are two piece warning lights with the cover and light bulb (2 wire tabs).