'69's have a connector stubbed out on the outside of the harness wrap inside the trunk - the pigtail plugs into the harness. There is a rubber grommet that seals the wire where it goes through the panel into the trunk interior - if I remember correctly, it should be part of the pigtail on the light.
Going from memory - I'll have to look at the NOS one (wherever I've hidden it).
Regards,
Steve