[/quote]It's NOT that the cables are made backwards......its because one way is correct for analog and one way is correct for digital. So you check the timing, swap the wires and check it again. The higher reading is the correct connection for a digital box, the lower number is wired correctly for analog. I have seen it be 6* different........so what you read as 41* with a light, may in fact only be 36* or so[/quote]

I get the actual timing change in spark output with switching the wires, but I'm not following how 41 would be seen as 36. It seems to me that if the polarity were to be switched, and in fact the timing did drop to 36, wouldn't he now have to bump up the timing to get the engine to run at its best? Not trying to argue, just trying to figure out the end logic.