Tom,
There are 5 fuses in the AC system.
1 AC compressor thermal fuse…which you have tested.
2- inline fuse on right hand transmission tunnel… Power from Ranco thermostat to compressor.
3- inline fuse holder on left hand side transmission tunnel to amplifier
4- located in main fuse panel - left under dash panel
5- located in secondary fuse panel - right under dash
You don’t state if the climate control system works…or blower motors etc…
I suggest first checking inline fuse from Ranco. Remove two screws from right hand trans tunnel scuttle vent. Remove panel by moving slightly to front of car then pull out. Inline fuse is held in clip…up rather high. Or located rather low. See pictures
