7740 Ford ac doesn't work

[Nelson Camp]

while running my ac on low fan speed ac was working fine. the fan quit running no ac. I turned fan speed to 2&3 the fan started up but no cool air. I turned fan speed to 1 compressor kicks in but doesn't blow don't understand what is going on. any help will be appreciated

 

[TractorTech]

Welcome to TBN!

My guess would be you have a bad resistor located under the roof assembly in the evaporator area.

 

[Nelson Camp]

Thanks for your help. How do I check this I check this part I think I found it

 

[TractorTech]

Put an ohmmeter on it and measure resistance.
Ho speed has no resistance. Medium and low have resistance. Low is higher resistance than medium.

 

[Nelson Camp]

when I removed it where I could see it I found a broken wire thanks again for the help