J&S rev limiter for classic Fords (updated)

New version with four position switch eliminates potentiometer

[@jselectronics8215]

This is a two stage rev limiter. The first stage is soft touch, firing two plugs, skipping the next, and repeating. This rotates the misfiring plug, preventing fouled plugs. If the engine powers through the first limit and goes 100 RPM beyond, the second stage will cut as many cylinders as needed. The soft touch is so smooth I was concerned some drivers may not know they are running on the rev limit. That's the primary reason for this simulation and test, to verify the system does not overheat when using the stock ignition coil and ballast resistor wire.