While driving it loses power and shuts off

Is the alternator charging the battery? Once you get the engine running again let's test the alternator output using a voltmeter. This guide can show you how. I noticed that this car has an IPM which goes out all the time and can cause this issue. It is easy to replace because it self initializes

https://www.2carpros.com/articles/how-to-check-a-car-alternator

Here is the alternator wiring so you can see how the system works. Check out the diagrams (below). Please let us know what happens.