Ok, I have a 1999 4wd Blazer and I put a 2002 Motor in with the smaller (M12x1.25) 2 wire knock sensor. The garage that did the swap left the 2 wire sensor and as you may have concluded the motor is Pi$$ed and running like crap. Does anybody know if an adapter will work so I can run the 1 wire?(if so, where did you get it part number etc) Or is there some way to may the 2 wire work? Or Last resort will I just have to tap the motor to accommodate the 1/4-18NPT thread? (can this be done with the motor still in the car?)