67 Dart 270...Project Old School

Hello all,

Over the past weekend I installed new bulbs for the rear brake lights and front turn signals. I also mounted the front headlights. When I was testing the turn signals, parking lights and running lights, I noticed the front turn signals turned off when I went from parking light configuration to full running lights with the headlights on. Is this a feature or is there something wrong with my headlight switch?
Thanks,
I know that on '68 Darts the parking lights go off by design when you turn on the headlights. This feature was built into the headlight switch. '69 parking lights stay on with the headlights. I'm not sure about '67 but it you have a '68 headlight switch it would turn off the parking lights when the headlights are turned on.