Grounding Fire (almost) - Now What?

You need to go though every wire under the hood.
And replace AS NECESSARY. Some may be perfectly fine.
Or at least use crimp and solder and water tight any splices in wire you splice in.
But why splice? They are short enough to replace.
The original wires in my daily had issues this year.
(I'd say that's pretty good for the age).
1. You need to "hard wire" the main feed wires through the bulkhead connector. Get rid of the Packard connectors.
2. Do the headlight mod. This will take a load off of your wires and switch. And your headlights will work better.

See here. Post 29 and the hot link to the other thread
GE nighthawk sealed beams