Just changed the thermostat. Turned power back on and pilot will not light.

I just changed my thermostat. After turning the power supply back on and turning on the unit, I discovered that the pilot is not lit. The blower comes on and the burners click like they are about to come on, but there is no pilot to light them. How do I get the pilot back on?

Put the old thermostat back on and see if it works. If it does then you know you have a thermostat wiring or thermostat problem.