Does your headlights use sealed beam or halogen lamps?
Halogen style lamps use a different size spade connector.
I would suggest removing old socket and going to auto parts store and getting proper replacement. If you use individual spade style connectors it will be hard to get polarity correct. You would need to test each time.
Yes, your summit connector would work if it is correct configuration. Same style is available at O'Reilly's.