I dont mean to beat a dead horse, but buy yourself a weep miser, it will save you enough $ to pay for itself very quickly.
In addition to saving you $ it will give you a much more standard weep setup which allows us to help more easily. It will also eliminate the need to adjust your thermostat based on the weather.
They are simple to install - 2 wires to the normally open soleniod, 2 wires for power (ie plug it into a wall outlet), and 2 wires for the thermostat (included i think). Just use the default programming.