"If you've not tried these connectors yet you should. They work like an ordinary push-in connector but the wires go in either end just like a through crimp. They've got me out of trouble so many times when I've had to extend a short wire and because you don't need to bend the wire back on itself like with standard push-ins they take up less space in the box. So much better than joining wires with a crimp!! No good for flex though, really only for solid wire."