1998 5.9 Blower Motor Resistor Block Location

I have no fan at any setting for A/C in my 1998 5.9 Limited. It may be the blower motor resistor block, but I don't know where it is located. I would like to diagnose & replace it myself. Thank You.

Never mind. I just checked under the dash on the passenger side and I found a connector that wasn't completly closed. All is OK now.