Intertherm to Honeywell thermostat

Question

I have an intertherm central heat/air, one day it just stopped working all together.  Thermostat wire going into outside unit was showing wire through plastic. Cut and connected back together but nothing. Am now replacing the thermostat from Intertherm to Honeywell. Question is Intertherm has Blue wire that Honeywell does not have. Also Intertherm does not have anything in the RC connector. Should I use the jumper or not on the Honeywell ?? Thanks for your help