I bought a 1227730 ECM . I am changing to SD. It has a yellow 32 pin connector. Should it be yellow or green? It show The black 24 pin connector shows A & B and the black 32 pin shows C & D . Is this unit correct? I was trying to identify the wiring but I am reading TPI Swapper's Guide and it is mentioning BA, BC, GE & etc. type of pins. Any help would be appreciated.