heater A/C box drain

[DirtyHippo]

Hey peeps. 2019 Classic 1500. sometimes during some wet weather or shortly afterwards when i start the truck i get a wet musty smell for the first few minutes before everyting warms up. I have looked for the heater box drain so i can ram some compressed air in to remove the blockage that i'm assuming is causing the moisture to not drain properly from the A/C. can someone please post me a picture of where it is located? i've asked the dealership and they are of no help at all and another mechanic friend of mine checked on All-Data and there's nothing in there about it. I hope I don't need to remove the box to replace the heater core or A/C condensor.

Thanks!

 

[mikeru]

On the 5th gens it's located on the firewall, above the right hand frame rail. I don't remember where it's located on 4th gens though. Hopefully someone can chime in with that information.

 

[bigdodge]

The drain is on the passenger firewall in the engine compartment close to the bottom in about the same position as a person sitting in the pass seat.