[Styrak]

Get a very small flathead screwdriver. (I'm talking watch-tools size here, or mini tool set)

Find the orientation of the metal tabs that hold in the wire connector ends.

Shove the tiny screwdriver in the front of the connector so that you flatten the metal tabs (there should be 2 opposite each other on each wire connector end).

After they're flat you should be able to pull the wire right out. To reassemble, pull the tabs out a bit, stick them in the new connector, and they should catch.