Specific Xenon adapter for switching from Xenon headlights to Bi-Xenon HID headlights with cornering lights for Audi A8 4E Also suitable for headlights with LED daytime running lights (these lights were fitted to S8 or W12) ONLY suitable for vehicles with a 10-pin connection on the xenon headlight - please check this BEFORE placing an order ONLY suitable for the needs of the on-board control unit with Q index If the on-board control unit does not have a Q index, it must be replaced - part number: 38986 The control unit for automatic adjustment must be replaced - part number: 38987 Only one set is required for both headlights Scope of delivery: 1x Xenon to Bi-Xenon adapter