Center A/C not working

[Bryan Altier]

Over the weekend I went out to run things and the center a/c in our 88
WLWB 40 is not coming on. I checked the switch which "makes" the
relay in the back and I have 120 volts at the connection box on the
unit, but nothing at the thermostat. I swapped the thermostat with
the rear which is working and still nothing so I don't feel that this
is the problem. Where should I go next ??? Thanks in advance for the
help.

Bryan Altier
88 WLWB 40
Greenville, SC