Which two contact points on the alternator should I use with the diode setting on my new multimeter. Main (+) stud and ground Main (+) stud and "blue wire" stud or what? Whatever the 2 correct points are I should get very little res. 1 way and open or infinate res the other right? Thanks as allways Ken 1979 Scirocco 16V - Almost done 81 Deisel P/U - Rescued from neglegent PO VORTEX: "Indiana Red"