2 Pin plug used on various things on VW Models...
Reverse light switches, brake fluid level senders, Fuel level senders etc.
2x Non Insulated Connectors to fit the plug.
You will need to cut the connectors from your original wiring, pass the wires through the boot, crimp/solder the new connectors onto the original wires, then fit the connectors into the plug... snap the plug closed creating a plug with a rubber boot.
Sounds more complicated than it is!