Automatic Headlight Sensor mod for A3 (8P, Sportback)

[mure]

Hello,

I own A3 (sportback from 2007) without the rain sensor and no automatic headlights. I wanted my lights to automatically turn ON when I enter the tunnel or when night falls, and also for them to turn OFF when I exit the tunnel. Installing original sensor for this would mean to also install different windshield and that simply was not an option for me. So I decided to build my own piece of hardware and install it behind the light switch. I am now sharing it with you, as maybe someone else might want to build it too.

c_870_soldered.jpg

c_870_finished_device.jpg

c_870_ready_for_install.jpg

Youtube video, explanation (enable english subtitles!): #002 Lemimo zajedno - Audi A3 8P Headlight Switch Mod - YouTube

Circuit schematics and microcontroller firmware for download: Automatic headlight sensor mod for Audi A3 8P - Elektronika.ba


In case you guys need any help with this, do not hesitate to post questions.

I hope you like it.

Best regards!