THE HVAC FAN MOTOR RESISTOR & CONNECTOR MELTED AROUND ONE OF THE PRONG CONNECTIONS AND WIRE. THE RESISTOR AND WIRE HARNESS ARE LOCATED JUST UNDER AND BEHIND THE GLOVEBOX ON THE PASSENGER SIDE. THE RESULT OF THE BURNING OF THESE PARTS IS THAT THE BLOWER SPEEDS OF 1-3 DO NOT WORK BUT 4 STILL FUNCTIONS NORMALLY. THIS PROBLEM IS MORE THAN AN ANNOYANCE OF THE FAN SETTING BECAUSE THE CAUSE IS MELTING WIRES AND BURNING CONNECTIONS NEAR THE PASSENGER'S FEET. HOPEFULLY THIS CONNECTION CAN BE RECALLED AND REDESIGNED BEFORE SOMETHING SERIOUS HAPPENS. THIS APPEARS TO BE A VERY COMMON ISSUE AS EVIDENCE FROM THIS BLOG. HTTP://COLORADOFANS.COM/FORUMS/67-TECHNICAL-QUESTIONS-TIPS-HOW/112853-HVAC-FAN-MOTOR-RESISTOR-CONNECTOR-REPLACEMENT-MMP.HTML. *TR