JEEP WRANGLER HEATER / AC FAN SWITCH For all of you 1999-2004 Jeep Wrangler TJ owners who may have experienced a problem with your heat, or AC fan speed. If your blower resistor isn't the problem, then chances are it may be the fan speed switch. A genuine Mopar replacement designed specifically for your Jeep, and best of all you can change it yourself and save yourself some 10223$. MOPAR # 5011214AA NO RETURN ON ELECTRICAL ITEMS!