2004 Renault 181 "block heater 04 250" Questions

...heater/ac switch doesn't work. Don't know if its the switch itself, the blower, and I'm almost positive its not the fuses because I checked. What to do next? i have a 2005 Sonata, the on/off switch ...

...block....but they have to tear it down and have a Ford inspector look at it. I just dumped a 2004 f-250 4x4 6.0 diesel with 40,000 miles...blown heads,turbo,abs,heater core, upper and lower ball ...