The connector with the pins you cannot get at to withdraw the wires and recepticles so you will have to cut the wires off. The connector that this fits into you can withdraw the pins by pressing down on the metal tabs that are exposed by the small "windows" in this connector. However, whether you will be able to reuse them is down to if the wires have been crimped or soldered on to the pin holders. Weirdly the connector that is hollow is reffered to as "male" the one with pins "female". You'd think it was the other way around. Easier just to buy new connectors or solder new wires to the stubs of the existing wires. Available from Fosworks and various sellers on Ebay. Max