Hei Swap with Toyota Alternator

On a denso the L wire for a lamp circuit is unneeded to flash the alt field circuit.

I have a denso that has 3 connections
output stud (self explanitory )
IG plug (Ign hot input)
L plug ( fault light)

I am wiring in a fault light on my ammeter that i converted to volts. If using a led for this remember they are polarity sensitive.

Denso fault light circuit shunts to ground at the alternator to turn the light on. This requires the positive wire for an LED indicator to start at the gage ign switched circuit.