I am doing a custom install into an earlier car and as I get closer to starting this thing, I have been browsing the forum. I am coming up with questions, but answers are elusive. Could someone please tell me what the conditions are that need to be met to get the silly thing to do a crank relearn? I am installing a neutral safety switch on the 4L60E so that I can get the correct inputs to the ECU. I will be running a brake input, and I haven't found the park brake input yet??? Any one know the correct pin to run to the park brake ground?

thank you and stay safe