Yes you won't see the lights, but if you wiggle the box you should find it gets powered-up & then it can connect to your smartphone via bluetooth.
Are you sure you've pushed it in far enough so it connects to the socket?
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Now: 04 reg V70 2.4 SE 2.4 auto 177k
Then: Volvo, Saab, BMW, MB, Ford, Vx, Opel, Fiat, Rover, Porsche, Alfa, Austin, Renault, etc
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