HELP ! My AC fan switch quit working suddenly on everything but max. Anyone know where the module is located that controls this? Anyone know where I can find a wiring diagram??

thanks, Don

It still works on highest setting.

It is probably the switch itself. If you take it out of the dash you should see the circut board that controls it and it is probably that.

Blower motor resistor located under glove box. Common problem on early TB models.