help- blue field wire grounded?

WOW. Where have you probed? The functional path is ----------from the ammeter..........to the welded splice in the black ammeter wire..........to the ignition switch connector...........through the switch.........out the switch connector on "IGN1"..........to the bulkhead connector...........through it.......and under the hood. At some point under the hood, near the ballast, it splits off to the various under-hood loads.

Time for a shop manual/ wiring diagram if you do not have one you can download several years, for free, at MyMopar

What year / model is the car?