2012 Kenworth model t370 blower moter

hello folks, I have got to replace blower motor in a 2012 Kenworth model t370 is it under the dash or outside at the firewall thank's for your help in advance.

 

well' I will answer my own question the blower motor is directly behind the air filter on the firewall outside. Now I got to find the resistor it's not where the dealer said it was so will explore more and find it.

 

ok, I found resistor man what a location for a part that fails often, it is behind the heat duck system at bottom of the dash next to floor you have to cut part of the duck system out and order a replacement from Kenworth. the resistor is between the duck and the firewall.