Where is the ac drain on 2006 Chrysler 300?

There isn't a single "AC drain" in the way you might think of a drain for a sink. The condensation from your Chrysler 300's air conditioning system drains naturally. The water drips down through a drain tube located behind the passenger side of the dashboard, near the firewall.

It's not easily accessible for cleaning or inspection without some disassembly. If you suspect a problem with your AC drainage (like water accumulating inside the vehicle), you'll likely need to take it to a mechanic. The drain tube itself could be clogged, or there could be a more serious issue with the AC system.