I made the LED Pulse Reader Device described onthe forum, but I cannot find anywhere how to use it? Looking down at what I am assuming to be the 38 Pin housing on my '95 SL500, I don't see anything numbered. Does anyone have information to share regarding where and how to attach the various pins? I assume the ignition key must be in the "on" position, but after that, what do you do? After you read a fault, how is it that you erase the fault? Any information would be appreciated. I am looking to pull codes for the ABS system. Thanks, Steve