Hi my auto electrician got access to a 3 position lucas mini switch with park... i have a 2 speed wiper motor with the following coloured wires coming off the loom red, green blue, green... (i have a leyland mini van loom from a 1976 van)

does anyone know how to configure the wiper motor... i know it will need extra wires in the loom as the switch has 8 points and the wiper motor i believe has 5? (standard 2 speed wiper motor from brads leyland)

ie which point on the switch goes to which terminal on the motor? and what each wire should be ie pos,neg etc etc etc...

a diagram would be fantastic but a good description would be just as good!
thank you all!

- tom