65 Barracuda gauge problems

That's so easy to fix it's a crime

Just get a scrap piece of insulated wire, just about anything from 14 to 18ga, and follow the trace, under the blue, out to the "fat" areas on each side. Take a sharp flat screwdriver, knife, etc, and scrape an area down to clean copper.

Make sure the wire is stripped to clean copper (IE not old corroded wire) and "tin" the wire with your iron and solder

"Tin" the copper you scraped clean, then just take needle nose, etc, and solder the wire down to the scraped areas.