69 Camaro Parking Light Question

[69LS1SixSpeed]

I'm just finishing up the "Painless" wiring on my 69 and the stock Parking lights / Turn signals units have two wires (One black and one purple) coming out of the housing. Which one is for the parking light and the turn signal? These two colors don't match the colors in my 69 wiring schmatic manual that I have. They also don't match up with the Painless wire colors but at least they are labeled.



Also..one other question...on the headlight plug is the 3rd black wire a ground? Thanks in advance for your assistance!