August 23, 2020
9
There is an optional connection for a pushbutton switch to manually engage the torque converter
clutch, and an LED to indicate that the TCC is on. This wire may or may not be present in your
harness, depending on the type. The switch and its LED can be added later as an accessory. See the
section below on “Using Optional Features.”
Regarding the Optional Pushbutton Switches
HGM sells three optional stainless-steel accessory switches to complement your application: A/B
Mode, Manual TCC, and Overdrive Cancel.
To Install:
Locate a position that is easy to reach from the driver’s seat.
Drill a 19mm or 3/4” hole for the switch.
Install the switch from the front with the O-ring in place.
Install the nut on the rear of the switch. Tighten gently.
Optional: Connect the Switch-Shift Harness
For vehicles with paddle shifters or pushbutton shifters, an optional Switch-Shift Harness connects
to the main connector. HGM also sells the Twist Machine paddle shifter, shown below.
