correct MSD tells you to ground directly to the batt not the chassis. I had a long conversation with an MSD rep about this years ago.
Of course they say that... they dont want you to
say its a MSD problem when you might have a ground
issue if it doesnt work right... they could say make
sure it has a GOOD ground but they go the easy way
to insure its grounded... I havent run a separate wire
back to the battery ever just for the MSD(on a chassis car)...
but I'll continue to do it my way and you can do it yours
