This is it. The Ross-Lock is relatively tiny, and if you can figure out how to connect switched 12-volts to the red wire, you’re in business. All that’s left is to plug the big 18-pin connector into the transmission and make sure the trans has fluid. The brown wire is optional. If you have a lockup converter, connecting it to a manual switch to ground will trigger the torque converter clutch lockup. The 4L80E allows converter lockup in Third and Fourth gears only.