68 Fastback courtesy light socket

Here's a pic of the courtesy light area on the rear wraparound of my 68 fastback.

I think I'm missing a part here, as the wires you see dont mount directly to the wraparound to accept the bulb - there must be a socket of some kind that fits in here, and to which the wiring is attached and also the bulb.

Am I right? If so, has anyone got a picture of this part so I cant hunt two of them down?

Cheers