HID bulb (low beam), replacing: Installing

Installation is reverse of removal, noting the following:

• Insert new bulb into housing, do not touch glass cone with bare hands.
• Place retaining ring -1- with both notches (arrow) onto locking lugs -3- of HID headlight -2- and then tighten by turning clockwise.
Fig 1: Placing Retaining Ring Onto Locking Lugs Of HID Headlight
Courtesy of AUDI OF AMERICA, INC.
• Re-connect electrical connection and close housing cover.