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11th Gen Chassis Codes: CL9 • CL1 | Model Years: 2023, 2024, 2025, and 2026.
This page provides the complete 2023–2026 Honda Accord radio wiring diagram for the 11th generation Accord (chassis codes CL9 and CL1). Use this guide when installing an aftermarket head unit or diagnosing factory audio issues in a 2023, 2024, 2025, or 2026 Honda Accord.
The 11th generation Accord features Honda’s most integrated infotainment system to date, with a large-format touchscreen deeply embedded into the vehicle’s operating system. Honda Sensing, climate controls, and vehicle settings share the display, making a traditional head unit swap unusually complex on this generation. Most audio upgrades on 11th gen Accords are accomplished by adding external amplifiers and subwoofers to the existing speaker outputs rather than replacing the head unit. Wiring information for this generation is still being compiled by the community.
2023–2025 Honda Accord Stereo Wiring Diagram
Use the wiring table below for your 2023, 2024, 2025, and 2026 Honda Accord stereo wire color codes, speaker wiring, and harness pinout.
| Wire Function | Wire Color & Location |
|---|---|
| Battery Constant Power Wire (12V+) | Blue |
| Accessory Switched Power Wire (12V+) | Red |
| Ground Wire | Black |
| Illumination Wire | Pink (Pin A4 of the 24-pin Radio Harness) |
| Dimmer Wire | Pink (Pin A4 of the 24-pin Radio Harness) |
| Antenna Trigger Wire | Black |
| Amplifier Trigger Wire | Green |
| Factory Amplifier Location | Behind the dashboard on the passenger side, directly behind and next to the glovebox. |
| Rear View Camera Video Positive (+) | White |
| Rear View Camera Video Negative (–) | Red |
| Front Left Tweeter Positive (+) | Blue |
| Front Left Tweeter Negative (–) | Light Blue |
| Front Right Tweeter Positive (+) | Gray |
| Front Right Tweeter Negative (–) | Violet |
| Front Left Speaker Positive (+) | Blue |
| Front Left Speaker Negative (–) | Light Blue |
| Front Right Speaker Positive (+) | Gray |
| Front Right Speaker Negative (–) | Violet |
| Rear Left Tweeter Positive (+) | Blue |
| Rear Left Tweeter Negative (–) | White |
| Rear Right Tweeter Positive (+) | Yellow |
| Rear Right Tweeter Negative (–) | Brown |
| Rear Left Speaker Positive (+) | Blue |
| Rear Left Speaker Negative (–) | White |
| Rear Right Speaker Positive (+) | Yellow |
| Rear Right Speaker Negative (–) | Brown |
| Subwoofer Positive Wire (+) | N/A |
| Subwoofer Negative Wire (–) | N/A |
2023–Present Honda Accord Speaker Sizes and Locations
Use the speaker table below for your 2023, 2024, 2025, and 2026 Honda Accord speaker sizes, and locations.
| Speakers | Speaker Size & Location |
|---|---|
| Front Tweeter Speaker Size | 1″ Tweeters |
| Front Tweeter Speaker Location | A-Pillars |
| Front Speaker Size | 6 1/2″ Speakers |
| Front Speaker Location | Front Doors |
| Rear Tweeter Speaker Size | 1″ Tweeters (12-Speaker Audio System) |
| Rear Tweeter Speaker Location | Rear Deck (12-Speaker Audio System) |
| Rear Speaker Size | 6 1/2″ Speakers |
| Rear Speaker Location | Rear Deck |
| Subwoofer Speaker Size | N/A |
| Subwoofer Speaker Location | N/A |
Have 2023–2026 Honda Accord Wiring Information?
If you have verified 2023–2026 Honda Accord radio wiring data — wire colors, pin locations, harness adapter tips, or speaker sizes — please share it in the comments below. Community-submitted data is reviewed and added to the table above to help other 11th generation Accord owners.
If you have a question about your 11th gen Honda Accord stereo installation, post it below and our community will work to find an answer.