Question: Where can I find a 1998 Toyota Avalon stereo wiring diagram? What are the 1998 Toyota Avalon radio wiring harness colors?
If you’re looking to change the radio in your 1998 Toyota Avalon or troubleshoot why your car radio stopped working, we’re here to help!
Our comprehensive 1998 Toyota Avalon stereo wiring diagram shows you all the stereo wire harness colors, car speaker wiring colors and car speaker sizes. Use our 1998 Toyota Avalon stereo wiring guide to help you with your car radio and installation needs.
In This Guide
1998 Toyota Avalon Stereo Wiring Diagram
This 1998 Toyota Avalon stereo wiring chart shows you all the 1998 Toyota Avalon 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.
| Application | Radio Wire Color |
|---|---|
| Car Radio Battery Wire (Constant Power 12v+) | Red |
| Car Radio Accessory Wire (Switched Power 12v+) | Yellow |
| Car Radio Ground Wire | Brown |
 Use a Car Radio Wiring Harness and Car Radio Dash Kit for an Easy Install! |
|
| Car Radio Illumination Wire | Green |
| Car Stereo Dimmer Wire | N/A |
| Car Radio Antenna Trigger Wire | Black |
| Car Radio Amp Turn-On Trigger Wire | N/A |
| Car Radio Amp Mute Wire | N/A |
| Car Radio Amplifier Location | N/A |
| Use an Amp Integration Harness to Connect Your Factory Amplifier to an aftermarket radio. |
|
1998 Toyota Avalon Speaker Wiring Guide
This 1998 Toyota Avalon speaker wiring chart shows you every speaker wire color and the speaker wire location. Use this 1998 Toyota Avalon speaker wiring guide to help you with a speaker replacement or speaker upgrade. If the car speaker wiring information you’re searching for is not listed, please don’t hesitate to ask for it at the bottom of this page.
| Application | Speaker Wire Color |
|---|---|
| Front Center Speaker Positive Wire (+) | N/A |
| Front Center Speaker Negative Wire (-) | N/A |
| Upgrade your Center Speakers for awesome sound! |
|
| 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 |
| Upgrade your Tweeters for cleaner audio highs! |
|
| Front Left Speaker Positive Wire (+) | Pink |
| Front Left Speaker Negative Wire (-) | Purple |
| Front Right Speaker Positive Wire (+) | Green |
| Front Right Speaker Negative Wire (-) | Blue |
| Use a Speaker Wire Harness for easy Speaker Installation! |
|
| 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 |
| Upgrade your Tweeters for cleaner audio highs! |
|
| Rear Left Speaker Positive Wire (+) | Black |
| Rear Left Speaker Negative Wire (-) | Yellow |
| Rear Right Speaker Positive Wire (+) | Red |
| Rear Right Speaker Negative Wire (-) | White |
| Upgrade your Subwoofer for deeper lows! |
|
| Subwoofer Positive Wire (+) | N/A |
| Subwoofer Negative Wire (-) | N/A |
1998 Toyota Avalon Speaker Sizes and Location
This 1998 Toyota Avalon speaker size chart shows your speaker measurements and speaker locations. Use this chart to see what speaker fits in your 1998 Toyota Avalon.
| Application | Speaker Size and Location |
|---|---|
| Front Center Speaker Size | N/A |
| Front Center Speaker Depth | N/A |
| Front Center Speaker Location | N/A |
| Upgrade your Center Speakers for awesome sound! |
|
| Front Tweeter Size | N/A |
| Front Tweeter Depth | N/A |
| Front Tweeter Location | N/A |
| Upgrade your Tweeters for cleaner audio highs! |
|
| Front Speaker Size | 4″ Speakers |
| Front Speaker Depth | 3″ Depth |
| Front Speaker Location | Front Doors |
| Use a Speaker Wire Harness for easy Speaker Installation! |
|
| Rear Tweeter Size | N/A |
| Rear Tweeter Depth | N/A |
| Rear Tweeter Location | N/A |
| Use a Speaker Wire Harness for easy Speaker Installation! |
|
| Rear Speaker Size | 4″ Speakers |
| Rear Speaker Depth | 3″ Depth |
| Rear Speaker Location | Rear Deck |
| Upgrade your Subwoofer for deeper lows! |
|
| Car Subwoofer Speaker Size | N/A |
| Car Subwoofer Speaker Depth | N/A |
| Car Subwoofer Speaker Location | N/A |
Questions and Answers
If you have any questions about your 1998 Toyota Avalon 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
Do you want to contribute 1998 Toyota Avalon stereo wire diagram information to benefit the Modified Life community? Feel free to share your insights by posting at the bottom of this page. We will gather any additional information presented below by our community, verify it, and incorporate it into the car radio wiring guide above for easy reference. We are consistently adding new information to improve and update this car stereo wiring guide as it becomes available. We appreciate your contribution in advance!
5 thoughts on “1998 Toyota Avalon Stereo Wiring Diagram”
Josh, thanks for the 1998 Toyota Avalon stereo wiring harness information contribution!
Arvin, the problem you are probably running into is that wire harnesses made shortly after the Avalon came out were made improperly. Luckily, many manufacturers have fixed the error. Make sure when you purchase a wire harness it is was manufactured recently and make certain you receive the right one.
I have a 1998 Toyota Avalon XLS with the 6 or 7 speaker option (front tweeters and rear sub). Does anybody know or have a link on how to wire a new stereo when you DO have the amplifier under the glove box? I’ve been doing some research and some people say to use a certain wiring harness however websites say it does not fit my vehicle. Others say to directly splice and bypass the factory amp… I am very confused and would appreciate some help. I want to buy an Alpine CDE-103BT and also upgrade the factory speakers. Thanks in advance.
Josh, the power antenna trigger wire refers to the wire that turns on the amplified antenna system. Thanks for the additional 1998 Toyota Avalon stereo information contribution!
The wiring diagram above does not include the subwoofer in the rear under the window. Also the 1998 Avalons do not have a power antenna and they do have a factory amplifier under the glove box. Other than that the diagram is very good.