How do you change the headlight bulb on a toyota matrix?
The new lamp that you buy comes with the lamp and the “L” shaped piece and the tabbed disc. So just take it out of the package, put the lamp end into the back of the headlight, line up the tabs so they go in the slots and then turn a 1/4 turn. It will snap into place. Then plug the wiring harness into the bottom of the “L” and you are done!