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View Full Version : ecu ground for obdII



crustysack
09-12-2010, 05:27 AM
02 ls1 into 65 GTO-I am NOT an electrical genius but after some research I have found where my wires are supposed to go- pin #2 purple is the data wire to/from the ecu ,pin#4 black is chassis ground pin#16 orange is +12v constant, pin#5 black/white is the ground for the signal/ecu. Where exactly should I hook this up to?? the ecu body itself? or to another chassis point? or the motor? Any help is always appreciated