Abstract: An automotive headlamp has a light source capsule including a seal area and a cup-shaped retainer affixed to the seal area. A plastic base includes a cavity arrayed about an axis and has a circumferential wall about the cavity. Axial slots are formed in the circumferential wall, the slots forming segments of a circle arching around the axis, the slots being further defined by a pair of oppositely disposed end stops. Metal inserts having base ends sized and shaped to closely fit the axial slots are positioned in the slots, each of the metal inserts having an extended resilient finger each having a retainer engager formed to engage the retainer. Retention features are formed with each of the base ends, the retention features engaging the circumferential wall and increasing the force necessary to remove the inserts.