Freaky MS box

If it lights an incandescent bulb and you feel a slight shock, it is more than just electrostatic buildup, and might be able to weld if a wrench touches it. Before complaining to MSD, check the SN and see if the same as on the many MSD Chinese fakes out there. Someone posted a photo of one opened up to show a single small transistor tacked to the case, instead of the complicated circuit board in a true MSD box.