We plugged in a Tech 2 scanner today and logged me driving down the road. It showed the computer was giving the right commands. My wiring guy said he realized he misplaced the brake switch wiring and also that he would double check the rest. The misplaced brake switch wire explains why I don't have tcc lockup but does it necessarily explain my tcc code? Can anyone tell me what exactly needs to be done to use a 4l60e harness on a 4l80e? Nelson says their conversion harness just moves the pins around which is what my buddy did. ....please help