Walt,
The sensors are the reference sensors on top of the bell housing back of the engine.
B4 you start to work on them, put a piece of tape over the TDC bell housing hole. You do not want to have a bolt fall in the clutch.
If the reference sensors do not come out easy, stop. Do not force or pull with a pliers. Wiggle R&L and see if they move (after you take out the 10mm bolt on top). If you are very lucky, they will slide up. There is an "O" ring seal that may be hardened.
If you cannot wiggle either, stop.
If everything goes right and the sensors come out, regap per Clarks with the "washer" as a quide.
Clean the connection at the ends of the sensors with electronic cleaner or similiar. Make sure you match the wires correctly when you put it back together.
GL
John_AZ
Speed and Reference Sensors - Checking, Replacement, and Adjustment