I have a tentec 301 knob that is extra to my needs. The knob is fine but the DB25 on the end of the knob cable has been removed and I do not have a schematic to figure out how to wire a new onto the cable. I will sell the knob as is (without the DB25 on the end of the cable) for $90 including shipping. Carl Moreschi N4PY Franklinton, NC