A6 Quattro Wagon V6-3.2L (BKH) (2006)
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Release securing guides - arrows - and remove headlamp housing cover.
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Rotate the HID bulb - 2 - in the - direction of the arrow - and remove it from the housing.
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Disconnect the electrical connector - 1 -.
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Release the clamp - arrow A - and open the adapter ring - 2 - - arrow B -.