Installed new 8.4 Ac don’t work blower works on all settings

[ManualCummins]

Anybody have any ideas I took it out of another vehicle yes it’s a four-speed conversion but that vehicle was too
It’s in a ram 2500 but that vehicle was a ram 3500 but I don’t see how that would matter

 

[ManualCummins]

Never mind fixed it I found that I was missing one plug

 

[Mpgrimm2]

Never mind fixed it I found that I was missing one plug

Late to the party. Glad you figured it out. (Left pin 17 plug disconnected between the 2 harnesses?)

M² Mods.

 

[madtrucker2016]

good job