Join Date: Jan 2009
Location: chalmette louisiana
Re: MSD Poblems
If I remember correctly the msd box should register between .5 and 5 volts at idle.
Mine was right at 3 volts
I think all you have to do is contact the tach output to the + on the volt meter and - on the meter to ground.
They do higly suggest you run your ground directly to the battery from the box.
The guy I speak to is Bass and Anthony...Bass is the tech.
hope this helps.