Mag timing check, for dumb guys

[skymstr02]

I apologize for being so harse, but I got burned by the FAA once after completing an annual inspection on a customers aircraft. The owner had performed undocumented maintenance, and since my name was the last in the book, I took the heat.

Touch the ground lead from your buzz box to one of the other leads, listen for a tone change and a light to either go on or off, depending on the type of box that you have. That will be the test for the unit.