I'm putting an '88 M6 back together from some customizations done by the PO. He removed the cat (had car in Canada) and with that he also removed the O2 sensor harness. I'm trying to find out the connection point within the engine bay where the harness would have emerged- can't seem to locate it and I don't have another M6 to compare to. Your help is always appreciated in advance. Thanks. PS- I'm also going to need to change the onboard computer's "coding plug" so that I can toggle between Metric and US readouts. Does any kind soul know where this little devil is located?