Auto Air Conditioning & Heater Repair: Ac no working on 98 Mustang, ac unit, coolant

Question
I have tried many things. The ac clutch will not engage. We made sure that the proper amount of coolant was placed in twice. There is no power from what we can see going into the ac unit at all. We were trying to figure out which relay works the ac and we are unable to determine in from the owner manual or any other resource. Would anyone know what the problem is?

Answer
Hi Danie

Check and see if you have power at the cycling switch located at the accumulator(bottle near the firewall)  If you do not then your problem is fuses.  If on the other hand you do have power,  Check if it goes in and out of the switch.  If it does not then your switch  is bad.  But if it does then your module is bad.  This is located inside the fender well on your passenger fender.