The car starts fine but within a minute or so the dash lights, gauges go out and simultaneously the engine shuts off

This is common when the ignition switch goes bad and needs to be replaced, to be sure here is a guide to test for power through the switch.

This guide can help:

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Here is the ignition switch wiring diagrams so you can see how it works and which wires to test. Check out the images (below). Please let us know what happens.