Okay, am I correct in thinking that pin 14 would be the negative side of the LED, or are you simply grounding pin 14 to initiate the test? How do you initiate the code sequence, is that w/ign on, engine off, press button for 3 seconds? What is the difference between the LED tester and the on-board LED? Any help would be appreciated, this info is not easily found on the factory tech CD's. If it's there, I haven't found it yet. These CD's have alot of great info, but they would only be more difficult to use if they were in German and written backwards. Thanks in advance.