Trunk light

Super-Cuda said
My bad.

I should have checked my car first as I confused this with something else.

Here's a pic of the actual harness, the bulb and the connection harness for reference.

As 67Dart273 said, single filament duel contact, which is clearly evident in these pics of a NOS setup.

Under Hood / Trunk Lamp Pkg# 2580612 - A - B - C - E - Body - 1966-71 - NOS - SHIPS FREE TO LOWER 48 - Blue Star Performance

Believe me, keeping track of bulb no's is harder at my age. In my "yute" we used to have small brochures from people like GE/ Sylvania/ Tung Sol with listings of the bulbs the bases, voltage and wattage, etc.