They're called Lucar connectors I believe - often found on motor cars and inside domestic appliances.
Some are solder-on and others crimp-on which means access to either a soldering iron or a crimp tool.
Lucars can be bought form DIY stores Motorist stores some electrical shops and electronic hobby stores like Maplin in the UK.
http://www.holden.co.uk/productimages/080_135.jpg
Peccavi
February 2010