I went out looking around some more this evening. First thing I did was replace the aux fan fuse with a new fuse with clean ends.
I unhooked the temp switch connector at the thermostat housing and both fans came on wide open. I hooked this back up and then I turned the a/c on and off and it seemed to work fine operating at low speed. May have been just the fuse not making a good connection. I will drive it sometime this week in traffic when it warms up and see if the temp switch brings it on. If it does not I will take a long hard look at the temp switch.