After a fire.....

The way I would approach this.

1. Remove glass
2. Remove entire dash (screws around where glass is and bolts under the dash on the sides, I assume the early A body's had that ability)
3. Photograph everything.
4. Start removing bad melted connectors
5. Check the switches etc connectors.
6. Check all wires.
7. Determine if dash harness needs to be replaced.
8. I would replace the engine harness, melted area away from the heat source and the blue tape suggests there may be issues there beyond the fire.
9. Repair paint on cowl and elsewhere
10. After dash is repaired, replace