Installing one wire alternator

I think the term shunt in the instructions is misleading.

Basically what you are doing is bypassing the ammeter.

You still need all the existing OEM wiring hooked up as it was originally. (Except the voltage regulator and field related wires)

The benefit to doing this is now the loads of the car (main splice, etc) are shared by two spade connectors thru the bulkhead connector vs just 1.