As PV8 says, it is a basic circuit but there are some variations. Unsure from your description if you have the blower switch with the resistors attached or if you have an on/off and separate resistor block. Here is a schematic showing separate resistor block. Pick your own colors and wire as shown. If you have the switch with resistors then the blower would connect to the H terminal on that switch instead of resistor block.
If you have a single on/off & speed switch, then one side the thermostat will attach to the C terminal on that switch instead of the separate switch the schematic shows, otherwise the same.
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