I have the troubleshooting bulletin I talked about here in front of me. It says that the in car sensor between pins 4 and 5 should be:
2000-2400 at 65 F
1590-1970 at 75 F
1170-1560 at 85F
These measurements are taken at these pins on the 11 pin connector. If there are two wires to the sensor itself, I expect that is the same thing. Sorry I'm not familiar with the early climate control.
I will do my best to remember to take this to the office tomorrow, if you need me to fax this procedure to you, just email me your fax number. This is a good article on troubleshooting the servo type system, not as good for the monovalve, later system.