Car appreciation... the aesthetics, the engineering, etc

Is it a whine or a screech? Screech would be a slipping belt. While could be a knackered bearing inside the alternator causing it to fail.

Tried poking a multimeter at it? The fact that it runs shows that it's getting some electricity but possibly not enough

It's a whine, not a slipping belt, know that noise!

Kinda bad electrical burny smell from the area when the engine is running and the noise is happening.

Seems like sometimes when you start it it makes the noise but then if you stop and restart it'll not make it.