The reduction resistor in automatic transmissions is usually installed:
Inside the Electronic Transmission Control Module (TCM):
* Built directly into the TCM, or located next to it on the printed circuit board.
Outside the electronic transmission control unit:
*Attached directly to the transmission housing, near the solenoids or speed sensors.
*Can be installed in a separate protective box mounted on the engine compartment or chassis of the vehicle.
The exact location of the pull-down resistor may vary depending on the make, model, and year of the vehicle. It is recommended that you refer to your specific vehicle’s owner’s manual or wiring diagram for accurate information.