i do not have a timeing light yet , iam trying to figure out on witch side from a 12o,clock position on my coil ,i know were the no1 piston is located on the coil , the timerbase tells me that, as inside underneath the sensors they are marked , now iam trying to position the sensor from a 12 o ,clock position in relation to the coil,once i know witch way the pulse goes clock wise or anti clock wise , then i can work it out just, need to know the pulse direction , because that will tell me whether iam advanced or retard, thanks