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I've just finished installing a non-sunroof W8 overhead lighting console in my B5. I used the ECS Tuning wiring harness and tapped into the number 17 line on my headlight switch. When I turn the overhead lights on and off, they work. However, the ambiant lighting doesn't seem to be functioning (buttons don't light up).

Think I have a dead unit or have I successfully managed to screw something else up?
 

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the deal finder!
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so, when you turned the headlight switch on, the ambient lights don't work? check the connection from the headlight switch to the console with the switch on with a multimeter or similar.
 

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Well, if I was you, I'd check which wire you tapped into, as I followed the instructions on some website to the letter (and photos), and while mine lights up, it does not dim with the dimmer control for the instruments. Seems like the wire colours and pin positions have changed over the years.
 
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