1969 Barracuda Dome Light Question

Ok heres your answer. Your missing a small 2 wire harness for the other dome lamp. But you knew that. It will be a light socket like the one shown in your thread, one yellow wire, one pink wire. These go to a female plug that plugs into the male plug you also have shown in your thread.

Maybe somebody parting out a 67/68/69 fastback here has this short harness. Check parts car listings. Its a shame it wasnt serviced in with the new wiring you got from year one. I think i remember it being like this on a 68 fastback i parted way back in 1988.