1999 Lexus RX300 Car Radio Wiring Diagram

1999 Lexus RX300 Car Radio Wiring Diagram

Whether your an expert Lexus RX300 mobile electronics installer, Lexus RX300 fanatic, or a novice Lexus RX300 enthusiast with a 1999 Lexus RX300, a car stereo wiring diagram can save yourself a lot of time. Automotive wiring in a 1999 Lexus RX300 vehicles are becoming increasing more difficult to identify due to the installation of more advanced factory oem electronics.

One of the most time consuming tasks with installing an after market car stereo, car radio, satellite radio, xm radio, car speakers, tweeters, car subwoofer, crossovers, audio equalizer, car amplifier, mobile amp, car amplifier, mp3 player, ipod or any car audio electronics is identifying the correct color car audio wires for your 1999 Lexus RX300.

The Modified Life staff has taken all its Lexus RX300 car radio wiring diagrams, Lexus RX300 car audio wiring diagrams, Lexus RX300 car stereo wiring diagrams, Lexus RX300 car radio wiring schematics, Lexus RX300 car wiring diagrams and cataloged them online for use by our visitors for free. Our automotive wiring diagrams allow you to enjoy your new mobile electronics rather than spend countless hours trying to figure out which wires goes to which 1999 Lexus RX300 part or component.

Feel free to use any Lexus RX300 car stereo wiring diagram that is listed on Modified Life but keep in mind that all information here is provided “as is” without any warranty of any kind and most of the car audio wiring diagrams listed on our enthusiast website are submitted by the Modified Life community. Use of the Lexus RX300 wiring information is at your own risk. Always verify all wires, wire colors and diagrams before applying any information found here to your 1999 Lexus RX300.


If you have any questions pertaining to the audio system in the 1999 Lexus RX300, please feel free to post it at the bottom of this page and either we’ll do our best to find you the information you need or hopefully someone in the Modified Life community will have the information you’re looking for.

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1999 Lexus RX300 Car Radio Wiring Diagram

Car Radio Battery Constant 12v+ Wire: White/Blue
Car Radio Accessory Switched 12v+ Wire: Gray/Red
Car Radio Ground Wire: Brown
Car Radio Illumination Wire: N/A
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Black
Left Front Speaker Negative Wire (-): Pink
Right Front Speaker Positive Wire (+): Purple
Right Front Speaker Negative Wire (-): Light Green
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Blue
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Red
Right Rear Speaker Negative Wire (-): White

7 Replies to “1999 Lexus RX300 Car Radio Wiring Diagram”

  1. where is the amp located? I have a connection problem the sound used to cut in and out now i have nothing? any suggestions would help!

  2. The AM radio reception is very poor while the FM is fine. I have changed the antenna with no improvement. I like to listen to talk radio and this is very annoying. I have the Nakamichi radio so it is supposed to be the best. Where can i go next to improve the reception? Thanks mark

  3. I want to put some used speakers in my 1999 lexus rx 300 my dad says its a closed system so i cant do it is that true and if not how can i anythin will HELP ^^

  4. My 1999 Lexus RX300 Tape Deck will not come on and will not eject my Sirius Satellite Radio tape cassette adapter. There may be an inline fuse for the tape deck transport which I cannot locate. I would appreciate the appropriate diagrams for troubleshooting this problem.

  5. Ed, double check ALL your fuses using an Automotive Fuse Tester because certain vehicles may have a wire tied into another circuit not labeled as car radio. You may have additional fuse boxes by the driver side of the dash, passenger side of the dash, driver kick panel, passenger kick panel, under the steering column or under the hood. If all of your fuses are good, your 1999 Lexus RX300 tape deck may be faulty. We suggest you take your car to an experienced audio installer and have them troubleshoot your problem. Hope this helps. Good luck with your 1999 Lexus RX300 cassette deck troubleshooting.

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