Hei conversion Intermittent start?

Something occurred to me and I'm wondering if it has to do with my voltage dip.
http://www.forabodiesonly.com/mopar/showthread.php?t=214567&highlight=Painless+wiring

If u scroll to post14 it shows the wiring diagram for a charging system. Mine is set this way except, there is a wire connected to a stud on the big heavy brick alternator and then grounded to the block. Now I wonder of that stud shouldn't be connected to the pos terminal?

Bare with me, on my crappy iPod touch 60 miles from the car.