Interesting.
The J520 pickup has two open collector outputs - n-channel so they source / conduct current when low.
But...
The low res pin (farthest from the ground pin) conducts when the beam is broken.
The high res pin (adjacent to low res pin) conducts when the beam is not broken. Since I'm 100% positive the ecu doesn't care about the "polarity" of the high-res signal it wouldn't matter. But you learn something new every day.
This means what I said in the previous post "with certainty" only applies to the low res signal. :-)
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