I have studied the mod that has been posted with the function chart and the logic chart. I dont have an electrical diagram and would like to know if you pull the wire that goe's to pin 5 and apply 12 v+, would this turn on relay 27. According to my owners manual this is the fog lamp relay. I have 1999 F150 XLT and it has the older style switch and circuit board assly. There is no auto lamp.

 

To the best of my knowledge (I've never tried it myself), that is exactly how it should work.