I am new to this forum so please bare with me. I have a 1993 ford F-150 and I cannot find the blower motor resistor. I was wondering if there was some kind of online diagram or a manuel of where I can locate this part to replace it. Once again thanks for any help and I hope I have asked this in the right forum.

 

Under the hood on the passenger side near the firewall to the right of the blower motor on the heater box, screwed in with two 7 or 8 mm screws with a 4 wire connector coming out of it. I think the top two wires on the plug are black and yellow.