If you have a burned out bulb on the passengers side then you will need to remove the air filter housing. There are two metal clips (one on each side) of the gray housing that the bulbs are located. Flip the clips to the outside and remove the gray housing and you have access to the bulbs.

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Ray
1998 Mercedes E320, 200K Miles
2001 Acura 3.2TL, 178K Miles
1992 Chevy Astro, 205K Miles