Smoke came out of the vents in the car and then my dash lights went out?

Good afternoon,

Does the smoke smell like electrical?

Smoke out the vents could also be from the heater core leaking coolant, but it would give you a sweet small.

If it is electrical, I would start with looking under the dash for any damaged wire that may be burned or rubbing up against something.

https://www.2carpros.com/articles/how-to-check-wiring

Roy