Here we go! Making the select shift of the frpp controls pack for 6r80 work.
I ordered the pins to add from power by the hour. It comes with the placement instructions. I soldered 3 wires colors to the pins and pigtails provided and shrink wrapped them.
Next, unplug the body harness from the ecu. This is the one that goes to the black box with relays and fuses. Looks like this from the plug side
Cut the tape and unwrap. Remove the strain relief cover by pinching the sides and popping out.
If you look at the back of the plug now, and look in the location 22 and 23, you can see the plastic plugs that have to come out. The plug is marked with the PIN numbers at the ends and you have to count over from there. Using a pick, gently pry the white front off the plug.
https://i.imgur.com/riqV98O.jpg
[img]https://i.imgur.com/MntjwdM.jpg
Next, use a pick from the front and push the plastic pins out of the back enough to grab them in the 3 positions noted in instructions. Then pull them on out.
Now, you insert the new pins in the same orientation that all the other pins are. The spring pressure tab should be facing the same way. Push each one in until it clicks. I think it’ll only go in one way. Finished, it looks like this and they should be flush with the front.
Reinstall the white front cover, the black strain relief in the back, running the new wires in the harness. Tape it all back up. You can then decide how to run the 3 new wires to your switches. I went along the body harness (I will put it in the harness when I pull it all out for paint) and will jump out where it goes into the car and run a new loomed leg to the switches. You can use any switches you want. Console mounted momentary buttons or even some sort of paddle on the wheel.
I fired it up and tested and seems it’s working great on the jack stands. One day I’ll go try it out in the street.