You can make sure the circuit is good downsteam of the temp sensors by simply jumping the two wires in those green connectors. However, they are designed to come on at different times. If I'm not mistaken, the one on the thermostat housing should activate when the car is running and the one in the front should activate when the car is off. So, jump the connector on the thermostat when the car is running and both fans should turn on (at least they do on my 5th gen). Jump the connector in the front when the car is off and just the radiator fan should turn on (again, on my 5th gen). I just had a problem similar to this and it turned out to be the fan timer (behind the glove box). However, I didn't have a blown fuse.... Like Hondatech said, there's usually a short to ground for a fuse to blow.

Did the fuse blow again?