Thorough diagnostic of 2005 T&C Blower motor and Resistor
Did you check the resistor module upstream? It may be burnt out.
Here's an excellent tread to troubleshoot the non-functioning blower/ resistor problem:
After checking the usual fuses and relays, it narrows down to:
1. The a/c control head (least likely cause)
2. The blower motor (likely cause)
3. The blower motor resistor (most likely cause)
Easy to diagnosis, a PITA to pull that blower motor out.
Good Luck everyone!!! Not too hard of a project for the DIY'ers.