cheers for that chris but that loom looks a bit past it and some bits seem missing off it , i have managed to acquire a daughter brd which enables me to plug my original ecu harness into it and then also plug the motec into that ,where each pin from original ecu plug corresponds with pins to motec plug making it plug n play ,i noticed motec did 1 for a st185 but was hoping one is available for st205 to make my job easier