I am going to do a two speed wiper conversion on my 403 and have followed the advice regarding what is required, Stafford vehicle Comments were very helpful, and also do a rotary switch for a two speed wiper which I hope I can use and keep the original knob - links to parts herewith
The motor we supply is
https://www.s-v-c.co.uk/products/lrw...ed-wiper-motor and the drive gears that fit are these
https://www.s-v-c.co.uk/products/lul...per-drive-gear
But not sure what switch was used, may be this one
https://www.s-v-c.co.uk/products/2sw...y-wiper-switch
Chris