Ignition backlighting 69 Swinger.

I'm talking about this with my 69 tech right now! There are 2 wires at each door jamb switch on cars that have the light package! I believe that either the door jamb switch helps to trigger this feature, or maybe the key in buzzer!! Message member "moparmatt2000", he knows a bunch about this stuff!!
69 Darts didn't have key in buzzers. I'm thinking those came along in 1970? when the ignition switch was placed in the steering column.