If you want to actually use a connector then use a Delphi 280 Connector, Delphi model number 12129487. This can be found on Mouser Electronics with this part number: 829-12129487. Delphi lists this connector as being used typically in Window Lift Motors. My team used this connector last year and they fit perfectly in the motor, and wouldn't allow for accidental disconnection.
The terminals for the connector vary depending upon the wire size you use, the complete listing of the terminals can be found
here under the "Related Parts" tab. Then take the Delphi part number and search Mouser for it to find the terminals on there.
Hope this helps.