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do I have a bad headlight switch??

I would say yes. The dash lights work in "park" so that tells you the park lights are OK and the wiring from the headlight switch to the parks lights has continuity. I would pull the switch out & with your VOM & see if you have continuity between the 12V "in" terminal and the park light terminal when the headlights are pulled out to "on"

live every 24 hour block of time like it's your last day on earth