BUT mopars dont use this kind of a setup. A voltage reg is a simple switch that turns voltage on and off to field on ALT. Unless we are now talking changing to a different system? Im thinking about those of us who want to keep mopar stuff.
I am talking about general alternators. If it requires a sense wire with a light, but you intend to use a an LED for your light, just run a sense wire with a resistor of the same or similar characteristics as the bulb it replaces to fake the voltage regulator into thinking you have a bulb. A resistor will take voltage both directions like a light bulb. Then wire your 12v LED in parallel to the resistor, with your normal 12v feed coming from an ign switched hot. Id say since the volt gage is ign switched hot, and the fault light is there, attach your sense wire to the + side of the volt gage stud and feed it to the voltage regulator sense connection.
The nice thing about doing it this way especially with a denso alternator is the LED will light no problem with key on, or with an alternator failure causing a ground. At least thats the theory. LOL