Question: Where can I find a 1994 Lexus ES300 stereo wiring diagram, and what are the 1994 Lexus ES300 radio wiring harness color codes?
If you’re planning to upgrade the radio in your 1994 Lexus ES300 or troubleshoot issues with your car stereo, this guide is here to help!
Our comprehensive 1994 Lexus ES300 radio wiring diagram shows all the radio wire harness colors, speaker wire colors, and speaker sizes. Use this head unit pinout guide to help with your car stereo installation or to troubleshoot radio wiring issues in your 1994 Lexus ES300.
In This Guide
1994 Lexus ES300 Stereo Wiring Diagram
This 1994 Lexus ES300 stereo wiring chart shows you all the 1994 Lexus ES300 stereo wire colors and their functions. Utilize this guide to help you with a car radio install or help with a car radio troubleshoot. If you don’t see the car radio wiring information you’re looking for, please feel free to ask your question at the bottom of this page.
| Car Stereo Wire Function | Wire Color Code |
|---|---|
| Battery Constant Power Wire (12v+) | Gray |
| Accessory Switched Power Wire (12v+) | Blue/Red |
| Ground Wire | Brown |
Use a Wiring Harness  and Dash Kit  for an Easy Install! |
|
| Illumination Wire | Pink/Blue |
| Dimmer Wire | N/A |
| Antenna Trigger Wire | N/A |
| Amplifier Turn-On Wire | Pink/Blue |
| Amplifier Mute Wire | N/A |
| Amplifier Location | Car amplifier is located on the right side of the glove box. |
1994 Lexus ES300 Speaker Wiring Guide
This 1994 Lexus ES300 speaker wiring guide provides all the speaker wire colors and speaker locations you need for an upgrade or replacement. Whether you are installing new speakers or troubleshooting your factory setup, this 1994 Lexus ES300 chart makes it easy to identify each wire and where it connects. If you don’t see the car speaker wiring info you need, feel free to ask your question at the bottom of the page — we are here to help!
| Car Stereo Wire Function | Wire Color Code |
|---|---|
| Dash Center Speaker Positive Wire (+) | N/A |
| Dash Center Speaker Negative Wire (-) | N/A |
| Front Left Tweeter Positive Wire (+) | N/A |
| Front Left Tweeter Negative Wire (-) | N/A |
| Front Right Tweeter Positive Wire (+) | N/A |
| Front Right Tweeter Negative Wire (-) | N/A |
| Front Left Speaker Positive Wire (+) | Blue |
| Front Left Speaker Negative Wire (-) | White |
| Front Right Speaker Positive Wire (+) | Black |
| Front Right Speaker Negative Wire (-) | White |
| Rear Left Tweeter Positive Wire (+) | N/A |
| Rear Left Tweeter Negative Wire (-) | N/A |
| Rear Right Tweeter Positive Wire (+) | N/A |
| Rear Right Tweeter Negative Wire (-) | N/A |
| Rear Left Speaker Positive Wire (+) | Yellow |
| Rear Left Speaker Negative Wire (-) | White |
| Rear Right Speaker Positive Wire (+) | Green |
| Rear Right Speaker Negative Wire (-) | White |
| Subwoofer Positive Wire (+) | N/A |
| Subwoofer Negative Wire (-) | N/A |
1994 Lexus ES300 Speaker Sizes and Locations
This 1994 Lexus ES300 speaker guide includes speaker sizes, speaker locations, and helpful info on speaker upgrades. Use this chart to find out what size speakers fit your 1994 Lexus ES300.
| Application | Speaker Size/Location |
|---|---|
| Dash Center Speaker Size | N/A |
| Dash Center Speaker Depth | N/A |
| Dash Center Speaker Location | N/A |
| Front Tweeter Size | 1″ Tweeters |
| Front Tweeter Depth | N/A |
| Front Tweeter Location | N/A |
| Front Speaker Size | 6.5″ Speakers |
| Front Speaker Depth | 3″ Depth |
| Front Speaker Location | Front Doors |
| Rear Tweeter Size | N/A |
| Rear Tweeter Depth | N/A |
| Rear Tweeter Location | N/A |
| Rear Speaker Size | 6.5″ Speakers |
| Rear Speaker Depth | 3″ Depth |
| Rear Speaker Location | Rear Deck |
| Subwoofer Size | N/A |
| Subwoofer Depth | N/A |
| Subwoofer Location | N/A |
Questions and Answers
If you have any questions about your 1994 Lexus ES300 radio installation, please don’t hesitate to post them at the bottom of this page. We’re committed to finding the answers you need, and members of the Modified Life community may also provide valuable insights into the car stereo information you’re looking for. Don’t hesitate to ask your car audio question; it could benefit others seeking the same answers!
Contribute
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8 thoughts on “1994 Lexus ES300 Audio Wiring Diagram”
is there a way to install a sub woofer and an amp into the factory stereo system? and where can i find out how
Bryan, yes it is possible to add a subwoofer and an amplifier to the factory radio. It does take some wiring knowledge and installation know-how. You would require an aftermarket amplifier, amplifier wiring, subwoofer and a speaker to rca line out converter. Here is the Line-Out Converter you need:
Scosche 2-Channel Speaker to RCA Line Out Converter
When splicing in the RCA Line Out Converter, tap your factory rear speaker wires to get a full range audio source. We suggest you invest in some solid wire taps that wont come loose. These wire tap connectors will allow you to tap into wires without cutting and installs in seconds by hand with no crimping or tools required. If you’ve never installed car audio before, we advise you to take your car to an experienced mobile audio installer. Hope this helps. Good luck.
If your amp has its own wiring harness attached to(most of them are right next to your RCA’s input), then you don’t need the LOC. Just connect the rear speakers wire with those wire that attached with the amp and before you do anything make sure to check your wiring diagrams first then you can go ahead and do the installation. Each car has different wire schematics and colors. Don’t assume that all cars have the same wire colors, that’s wrong. It’s more complicated than what you think. I’ve done this to my Honda LX-P 08 and it works great. It has a stock radio, mp3, WMA, aux input for ipod,etc…I didn’t have to use the LOC when I install my aftermarket sub and amp but I still run my RCA’s cable in case for the future installation. Have a wonderful day!!!!
Jacknguyen, thanks for the 1994 Lexus ES300 stereo wiring information contribution!
I get no voice from the 1994 Lexus ES300 speakers, reinstalled the original radio and no voice/sound either. What is the problem?
Fernando, first double check ALL your fuses and make sure ALL your fuses are good. You can do this by using an Automotive Fuse Tester and making sure all of your fuses are not blown. If all of your fuses are good, your 1994 Lexus ES300 may have a factory amp that needs to be turned on by your after market radio. The car radio amplifier trigger wire has to be wired up to turn on your factory amplifier to output sound from your speakers. Double check that your 1994 Lexus ES300 amp turn on wire is connected. Hope this helps. Good luck with your 1994 Lexus ES300 stereo installation.
The seek tune / scan buttons arent working right. they dont stop on any radio station. what could it be? thanks!
Juan, it sounds like your 2003 Kia Spectra radio seek/scan buttons may be faulty. We suggest you take your car to an experienced audio installer and have them troubleshoot your problem or have them replace your stereo. Hope this helps. Good luck with your 1994 Lexus ES300 stereo troubleshooting.