It appears there's two basic kinds of speed sensors.

#1, Variable reluctance, Two wire, Unpowered, Sine wave.

#2, Hall effect, Three wire, Powered, Square wave.

Are the VR sensors and HE sensors accurately described above? Are the LS ecu's looking for a VR sensor in every case? Can a HE sensor be pressed into duty, or is it a no-go for feeding a ecu?