does anyone have an original manual from one of the SWI-X units? I seem to have lost my manual, I have the PDF version, but it's missing the info on the range of resistors it will function on, and it's missing the section on the different versions and how to set the actual version, I have eight resistance values built into a relay box, that work with the unit now, but I need to add four more to use all 12 possible functions