Pressure riser trans resistor

We recently found on a 96 transmission a resistor had been added on the trans harness that said "Pressure Riser TM 1"
It is 78 ohms and goes between the duty solenoid A wire and ground. I'm guessing it might have some of the same effect as pulling the resistor behind the battery but I wondered if there is some standard mod here since the name on the resistor.