Pontiac 2005 Montana Owner's Manual page 371

7. Install the new bulb through the black retainer ring
and into the electrical connector.
8. Tighten the black retainer ring in place. Push the
bulb firmly enough so that the blue tabs hook over
the tab on the bulb.
9. Carefully put the bulb assembly back into the lamp
housing. Be careful not to damage the bulb on the
headlamp aiming bar.
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