How do you hook up a thermostat for a York furnace to the furnace?

Gas or electric?

Gas

Okay, can you tell us what letters are on the stat, and what letters are on the furnace control board where the stat wires hook?
Normal breakdown for heat with central air conventional heating system.
On stat, red to r, white to w, green to g, yellow(or blue) to y.

At furnace, red to r, white to w, green to g, yellow or blue to y. then two wire stat wire between furnace and condenser outside, red to y(with yellow or blue from stat). And white to c. hope this helps.