HELP! Circuit board

I was just cleaning up the ralley dash for my '68 Fish when I decided to check the ground side of the bulb pads to "ground." Some of the pads were 0.1 ohm, but one was 179K ohms to ground, just a little different. Corrosin under the ground screws where the steel screw meets the copper pad, cleaned up and put dielectric grease on the screws before reinstalling. That corrosion would have led to some interesting headaches in the near future.