So I paid to have a harness conversion. 2002 gtp L67 to Fiero. I now have a p0705. I spoke to a Tunner about getting ready to dyno but we both feel I should pin the gear selector first. I don’t know what pins to get. Or from where. And a diagram of what the car is looking for in what gear. I did purchase the clips for the selector and put my reverse lights on it. I am an electrician so the wiring is not a problem. Please help. I am also getting a p1860. I was told the TCC needed power off the brake and 0 volts on the brake. So I wired a relay into the brake switch. And that’s what I gave it but when I clear the codes after 2 minutes or so this code comes back. Other wise all clear not to bad. 2 codes. But I want them gone before dyno please help.