I'm trying to wire my fuel oil furnace to run the blower without heat for my outdoor wood stove

Your thermostat doesn't have a "fan" switch on it? Maybe if you put another thermostat on your system that does will make it easy without causing other problems.

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Originally Posted by smoothy

Your thermostat doesn't have a "fan" switch on it? Maybe if you put another thermostat on your system that does will make it easy without causing other problems.

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My furnace only has two spots for the thermostat

Thermostat doesn't have a Fan ON side? Otherwise use a single pole, double throw switch. Hot to the middle terminal, Switched one way the heater circuit is energized, thrown the other, only the fan. You will need a hot jumper to the fan only side.

If your thermostat doesn't have a switch marked ON/AUTO it should be replaced with one that does for about $25