Retired guy
Bronze Member
Does anyone out there have the wiring diagram for a 2012 CK30 cab. My dealer does not even have it in the shop.
My heater fan only runs on low. The original 2 way switch showed continuity in both positions but I bought and
installed a new one - same results. I am looking to see if there is a hidden relay or separate fuse for high speed.
I suspected the resistor but it is the low speed that is working. Suggestions?
My heater fan only runs on low. The original 2 way switch showed continuity in both positions but I bought and
installed a new one - same results. I am looking to see if there is a hidden relay or separate fuse for high speed.
I suspected the resistor but it is the low speed that is working. Suggestions?