For the drivers, use a male 2 pin JST Ph connector. The drivers should be color coded already with red and black, or red and no color. Simply match the cables to the color of the solder spots on the driver.

Lastly you've got the 3.5mm sockets. Just solder the red and black cables to the right spots. Black is connected to the top middle long one, and the red cable connected to the right bit.

Make sure that you don't accidentally push in the metal bit as it could make it no longer function properly. If you do accidentally push the rod too much in, simply use tweezers to pull it to the original position while it's still hot.

And you're done!