connector of Wifi cable

I own a Macbook, retina 12 inch, early 2015. I had to replace the battery. But when doing that, the cable for the touchpad broke and the connector of the wificable broke of the cable. I can buy i cable for the touchpad, but i dont know how to connect the wifi cable connector to the cable, it is too small. Anyone who knows a sollution? Thank you.

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