Up for sale is a BOSCH Throttle position switch. Good used condition.  I did the manual checks with my ohm meter, and this unit checks out functional.   0 280 120 032    039 906 111 A   Fits a variety of early 914's.  Check your original part number to be sure of fitment!  BARGAIN ALERT for a good functional TPS.

Works fine and comes with a 30 day warranty.   You can still buy these new, but at a cost of nearly $150 they are rather unaffordable.  Thanks for looking and good luck!