How To Create a 12V Line When The Ignition Is On on 2006 Audi A8 D3

So, I got tired of switching on and off my bluetooth and raspberry pie in the trunk, sometimes I forgot and both of them running all day, I created a 12V line today, only on when ignition is ON and off when the ignition is off.

Just need a 12V relay – a fuse line (5A) – wire splicer.

12V Relay     Electrical Splicer to Yellow_Black wire

12V and Ground Source

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