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On the Ford A4LD automatic transmission the modulator valve is on the
passenger side of the transmission ( it might be behind a heat shield )
A diode modulator is a type of AM modulator constructed using diodes. One type of diode modulator is the ring modulator shown in the image.
A diode bridge modulator is one kind of balanced modulator.
A 1999 Jeep transmission does not have a modulator valve.
This transmission does not have a modulator valve.This transmission does not have a modulator valve.