Curious -- a lot of older coaches [mine included] use mechanical wax valves to regulate/control engine fan, vs the electronic control on newer coaches. As a result, there is no dash A/C interface to the fan controller on many of these older coaches. Adding after-market cooling fans to the A/C condenser, with a relay to the compressor clutch switch, will significantly improve dash A/C cooling and help prevent freon [134a] over-pressure and premature compressor failure.
2003 Alpine 40' MDTS
New Braunfels, Texas