ac not working

[jhullah]

so the ac in my 61 sahara wont work you flick the switch and the fan wont start up have pulled the fan motor out and tested it and it works excellent there is power to the ac button but the switch wont kick in have no power to the switch can anyone give me some ideas where the issue could be

 

[Firewout]

Resistor block for the different speeds? When the resistors burn, the fan won't turn.
Welcome by the way.
Do you mind to share some info about you and your truck in the 'introduction' section?