Well, first chance you get to try it.... if the reading jumps around all over the dang place on a multispark box, you'll know. That's why I'm looking for a light. A great deal anyways.....
MSD has a light that works with their systems. Probably a good idea to get one of those. The Actron lights are good stuff but may not work on MSD. The description doesn't say it works with MSD.
