Number of "Light Bulbs"

["Feldman, Jack (Jack)" <jack@lucent.com>]

I was looking forward to the answer to Mike's question about the number of
the various "light bulbs" (proper term "lamps"). Either I missed it, or the
answer was given directly. J.C. Whitney has a sale on halogen backup lights
@ $9. a pair, but there are a number of types. You need to know which it is.
I was getting a round toit when I saw the post, and thought I could be lazy.
What number backup light do we use?

Jack