I'd like to wire my blower motor to my Honeywell CT2800 programmable thermostat so that I can use the manual blower switch. However, I am a bit confused as to how to do this. The furnace is a Clare Brothers MBG120. The 120VAC comes into the furnace and the white wire goes to the 120VAC to 24VAC transformer as well as to the furnace blower. The black wire goes to some type of switch that has a dial on it and a knob that you can pull out and run the fan manually. Limit switch I am guessing. Out of that switch comes a red wire that goes directly to the fan and a white wire that goes to the other side of the transformer. From the transformer, there are two wires and they go to a valve assembly on the gas inlet. On that valve assembly are the terminals TH, COIL, and TR. One of the wires goes to coil and the other one goes to TR. On the same terminals, the thermostat is wired and a yellow wire goes to the TH and a red wire goes to the coil. Up at the thermostat, the yellow wire goes to the terminal marked R and the red wire goes to the terminal marked W. There is a G in the thermostat, but there isn't anywhere on the furnace. I think that I might have to install a relay, but I am confused since the fan motor doesn’t have one already and runs strictly off 120VAC. Can anyone shed some light on this? Thanks very much.