Audi A3 8v rain light sensor retrofit wiring

[Bush_man]

Hi lads

An other ask from me, trying to retrofit RLFS but I'm stuck in wiring the sensor B to the auto light switch.

I used VCDS to enable the sensor in 09 - Cent Elect = Byte 6 > Bit 0-1 = 02 Light Sensor (PR-8N6) installed.

But as silly as it might seem I'm stuck at where to plug 3 wires coming from the sensor as per pictures,
Red is pin 1
Brown pin 2
Purple pin 3

Any help would be grateful

 

[Stealth80]

They need to go into a control module, the wiring to switch (that you removed) stays.

I'm not sure which connections or which module they connect to, but the ring is for an earth, had to do something similar for my foorwell lights