Thanks in advance. I was trying to scope the secondary ignition single cylinder on a GM 3.8l waste spark system & so far have had no luck at all. I go to labscope, ignition, single cylinder, using the included secondary pick up lead [yellow & black lead, w/RCA plug] onto which I plugged in the secondary pick up probe. I was also using the rpm pick up module. I do get an rpm reading however all I get on the screen is a yellow[ch 1] trace at the 0 voltage line. What am I missing/doing wrong?
