65 Barracuda gauge problems

You could patch that trace to complete the 12 volt path to that center post or just splice in a wire from the wire in the harness connector to the wire of noise supression capacitor which is also in that center slot.
You would leave all other original connections intact so 12 volts would still go the the pin on the board.
Just keep in mind that copper trace was weak there to serve as a fusible ( weakest link ). Could still be a fault other than the original limiter and capacitor.
Check your gauges for 20 ohms across.