To test the ground between the dome light and the trunk, my son hooked up a 9V battery at the dome light and I tested 9V in the trunk. The ground from the dome to trunk is all good. Again at the dome, there is 12V at one wire and then the ground. (Both wires are white oddly enough).
Now to find where that white wire from the trunk connects at under the dash. If it’s the drivers kick panel, uhhhgggg. I’ve done that before and not looking forward to it.
Note, the light switch/knob doesn’t activate the light either.