Hello all, 1st post. Engine swapping a 2004 3.2 MB that came out of a 2004 Crossfire into an 280SL. Have the tranny (722.6 MB), the TCU, the matching ECU, and shifter from the same donor car. So far so good. Where I’m struggling is the harness that loops these components together. I have the Engine wiring harness, but still can’t figure out if the transmission harness to the 13 Pin connector and to both the shifter and TCU is a stand alone harness or part of the main body harness. Any help would be greatly appreciated. THANKS Craig R.