The shunt is the ammeter connection- - - -disconnect the BAT wire at the regulator (DC generator systems), attach the slotted end to the regulator terminal, and the BAT wire to the other end of the shunt. You can probably check alternator amps the same way- - - -slotted end to the big connector stud at the back of the alternator and the battery wire to the other end of the shunt. The red and black test probes are used for everything else- - -voltage, dwell, tach, etc. That one's just about dummy-proof, not much way to damage it with a wrong hookup.
Jerry

Last edited by Hotrod Lincoln; 01/06/2014 2:59 AM.
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