I have a Horton, I called and they said they stopped making them due to changes in the Dodge line. however you can still buy the Clutch, and I found a guy who makes plastic blades that will bolt to the Horton Clutch. I did my own controls for the Horton any way so wiring is no big deal. In the winter it never engages and in 85 degree weather it engages off and on. A/C works on high pressure so fan only enges when pressure raises.
Rick
Rick