Go to
http://k.domaindlx.com/aspViper/Personal/Dyson/switch.html
I used the drilling method, made it easy. mind you the screw to remove is one of those automotive 5 cornered types, but a small screwdriver did the trick.
Need either two new connectors or a dab hand with asomething to prise them open and solder new wires on. works perfick. Gaz 9/12/05 just did mine
gaz
December 2005