When upgrading the stock halogen / incandescent lamps to led lighting bulbs, the bulb size guide will be much helpful, below are the bulb size guide for 1993~2012 Acura RL; yet it is for reference only, it is suggested to check the owner manual to confirm the bulb size guide is correct before purchasing.
- High Beam Headlight for 1999~2004 Acura RL: H1 ; for 2005~2012 Acura RL: 9005 ( DRL: Daytime running light ); for 1996~1998 Acura RL: 9003
- Low Beam headlight for 1999~2012 Acura RL: D2R / D2S; for 1996~1998 Acura RL: 9003
- Front turn signal light ( blinker light ) for 1999~2006 Acura RL, 2009~2012 Acura RL & 2007~2008 Acura RL with adaptive ligting: 1157A / 1157NA; For 2007~2008 Acura RL without adaptive ligting : 7440A / 7440NA
- Rear turn signal light for 1996~2002 Acura RL & 2005~2012 Acura RL: 7440 / 7440A / 7440NA
- for 2003~2004 Acura RL : 7507 / 7507AST
- Fog light for 1996~2004 Acura RL: H1 ; for 2005~2012 Acura RL : H11/ H8
- Brake Light / Tail Light for 1996~2004 Acura RL: 7443 / 7443-SCK ;for 2005 ~ 2012 Acura ILX: LED
- Back-up reverse light: 7440
- License plate light / Tag light: 168 / 2825
- Interior Dome Light: DE3175/ DE3022
- Interior Map light: 175 / 2825
- 3rd Brake light/ Center high mount stop light for 1996~2004 Acura RL: 3497 ; for 2005 ~ 2012 Acura RL: LED
- Glove box light for 1996~2004 Acura RL: DE3021 ; for 2005 ~ 2012 Acura RL: LED
- Front side marker light: 168 / 194NA
- Trunk / Cargo Area light bulb for 1996~2004 Acura RL: DE3021 ; for 2005~2012 Acura RL: 168
- Interior door light for 1996~2004 Acura RL: DE3021; for 2005~2012 Acura RL: 194
- Vanity mirror light : 6612F
- Courtesy Light: 194
- Rear Reading light: DE3175
Vehicles includes: 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Acura RL
