Crimp connectors can introduce resistence issues, hard to find intermittent issues. Crimp, solder, heat shrink. Don't cheap out on electrcial.
That switch would work fine, although you might want to find an OE application instead, in case you need it on the road. Check out
www.rockauto.com. A lot of their listing have pics. You just might need to find the right pigtail. But my 82 TA one looked a lot like that, IIRC