[FWDLK] What is this???

[Timothy A Koah <talk4u@xxxxxxxx>]

Greetings!
Since no one replied to my question I bet I messed up sending it so here
is what I have and don't know where it goes: A teardrop shaped light with
an orange lens.  It looks like it should go top of a small truck.  The
letters on it are: YANKEE 77, SAE-P-66, & inside 4070.  Since there is
only one wire to it, can it be only a parking like?  I was told that they
were to a car but I think I was given the wrong scoop...what can you tell
me?
Tim
55 NY