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Install ground wire from the pin 54 orange wire with black stripe to a switch or relay such that the ground source can be turned on and off. The pin 54 orange wire with black stripe is located in computer connector located on the firewall behind the air cleaner.
Driver must ground the pin 54 wire, have gear selector in DRIVE, and be moving fast enough to be in second gear before the torque converter clutch will engage. Transmission will shift from 2nd to 3rd, and 3rd to 4th (unless overdrive is off) with the torque converter clutch locked. Once in 4th, the transmission will not downshift unless the ground source is interrupted, i.e. the switch is turned off. | 
