My ohmmeter wasn’t working. Batteries were fine, but absolutely no juice. Needed to test fuses. Fuses were fine. There was actually an issue with the negative post. I wrapped it with aluminum foil, and everything is back to normal.

The bulbs have been replaced, and the headlamps put back into the Impalas. They don’t look brand new, but they look quite a bit better than they had. The missing spark plug for the Dodge arrived, and it’s put back together and idled for a few minutes to get the battery charged up.