The D3 has a six CD player in the glove box alongside the AMI player, and a Nav DVD player in the boot.
The supply to the Nav DVD player has three wires in the plug. Two always hot and one earth. I was using a high resistance LED display tester so one of the always hot could have been a signal wire.
I'm not sure how these things work but using my old world experience I think that the signal wire tells the unit to switch on. BUT please don't believe everything I say, I'm only guessing.
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Ray at Wigan Pier
2014 A8L D4 4.0TFSI Gold (Sticker says "Beige") Can't leave you in a black smoke cloud anymore..
In progress, Nothing left to do.
Gone 2004 A8 D3 3.0 TDI. Ebony Pearl Black (with little bits of other colours and glitter)
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