I have a 99 Nissan Quest that I have replaced the blower resistor in order to get the low speeds to work on the fan. The new $34 resistor burns out after 3 days. I suspect there is a short somewhere or something is causing the resistor to overheat. Has anyone found faults related to this? The dealership said there is a second resistor for the rear air, where is that? They said by the other one, but I did not see it. Leaves blocking air flow over the resistor? Bad Bearings on the motor causing excessive resistannce? The ac does not work and I noticed that no hot air blows out of the rear air vents. Any ideas?