Headlight washer system, how does it work/wiring info please

[@udi A3]

Ive been reading snippets here and there, and with this bad weather decided Id like to retrofit headlight washers, and eventually I may consider the levelling system too, to go with the oem xenons I have.

So can somebody link me to wiring diagrams for the system, plumbing diagrams, including any part numbers/photos, and a description of how they opperate.

From what i undestand they operate on a delay based on time of screen wiping and number of wipe activations. Initialy I am thinking of adding a push switch near the cup holder to activate the washers for ease of install.

What makes the washer head pop up, is it pressure or a solanoid?

Has anyone else retrofitted these and i missed the how to guide?

Thanks.

 

[hades-]

water preasure makes them pop up
i fitted them once to a a4 no guide
got the full bumper with washers and pipe work
i got a new water bottle with pumps and fitted

 

[@udi A3]

Awesome, found a set on the bay inc the pump, should just be a simple relay and switch job