Suburban SF-30 furnace

[MGM53]

After checking things in a/c until, when I turn heat on. I can only hear a clicking from the a/c unit. The furnace doesn't do anything. Is the a way to run a new set of thermostat wires to the furnace?

[MGM53]

Just a update about my Suburban SF30. I found out what the problem was. The red(12+dc) and white (heat) wire was shorted out somewhere between the thermostat and furnace. I ran a new thermostat wire (red and white) from the furnace to the thermostat, capped off the old red and white wire. Also put my old thermostat back on. Heat and a/c are both working great now. Thanks to all who replied.