Well…I put a new battery in, cleaned the two frame grounds by the front wheels, and the one for the ground strap on the firewall. The one on the frame on the passenger side was covered with grease and gunk. The one on the pillar was beyond my pay grade with trying to take that whole dash trim part up LOL.
Test drive was fine so I’m praying for the best. Thanks to everyone for their help!
Last question: should I cover the frame grounds with grease or something? I did use some sandpaper (on both the frame and the terminals) to get a good connection.