Steve I’m not sure about the switch. I’d believe that you should be able to use the factory switch. It might require a just a jumper wire but I’m not sure as I’ve never done it. Here is a diagram for doing the same thing on a 65-66 Mustang.
It think this is a little more complex than you might be thinking. The headlight switch has a built in 15 amp circuit breaker. This is just barely adequate with 4 stock headlights. When you add the additional current required by the parking lights you may exceed the current limit. Probably the best course of action would be to use a relay to power the headlights and then use a diode to power the parking lights when the headlights are switched on. I believe you will find the switches are the same and the difference is the wiring harness.
I took my steering column out and painted it I remove the turn signal switch by removing the pins out of the plug when I put everything back together the LED headlights work but no directionals in front
I was just wondering if plugging the headlights into the new LED bulbs shorted out the directionals or if the power for the directional bulbs under the bumper came from the headlight plugs and by switching to LEDs I canceled out the power to the directionals somehow