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2021–2026 Chassis Codes: CN7 (7th Generation) | Model Years: 2021, 2022, 2023, 2024, 2025, and 2026
This page provides the complete 2021–2026 Hyundai Elantra radio wiring diagram for the seventh-generation CN7 chassis. Use this guide when installing an aftermarket head unit or troubleshooting your factory stereo in a 2021, 2022, 2023, 2024, 2025, or 2026 Hyundai Elantra.
The CN7 Elantra debuted with a dramatically restyled “parametric” exterior and a standard touchscreen display audio system on nearly every trim, alongside a larger available 10.25-inch infotainment screen and wireless Apple CarPlay/Android Auto on higher trims. Limited trims offer a factory Bose premium audio package that adds a dedicated amplifier and additional speakers compared to base sound systems. Hyundai refreshed the styling for the 2024 model year with an updated grille, lighting, and wheel designs, and added rear side airbags and other safety updates, but did not change the factory head unit connector. As of this writing, Hyundai has just unveiled an all-new, larger eighth-generation Elantra (Avante) expected to arrive in North America as a 2027 model, so the CN7 generation covered on this page runs through the 2026 model year.
🔗 In This Guide
2021–2026 Hyundai Elantra Stereo Wiring Diagram
Use the wiring table below for your 2021, 2022, 2023, 2024, 2025, and 2026 Hyundai Elantra stereo wire color codes, speaker wiring, and harness pinout.
| Wire Function | Wire Color & Location |
|---|---|
| Battery Constant Power Wire (12V+) | Red/Orange |
| Accessory Switched Power Wire (12V+) | Blue |
| Ground Wire | Black |
 (Simple Radio Install, Keep Steering Wheel Controls and Use Factory Amplifier) |
|
| Illumination Wire | Blue |
| Dimmer Wire | Gray |
| Antenna Trigger Wire | N/A |
| Amplifier Trigger Wire | N/A |
| Factory Amplifier Location | Right Side of the Trunk. |
| Rear View Camera Video Positive Wire (+) | Red |
| Rear View Camera Video Negative Wire (–) | Black |
| Center Speaker Positive Wire (+) | Purple/Red (At Amplifier) |
| Center Speaker Negative Wire (–) | Purple/Black (At Amplifier) |
| 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 (+) | Purple/Blue |
| Front Left Speaker Positive Wire (+) | Yellow (At Amplifier) |
| Front Left Speaker Negative Wire (–) | Purple/Red |
| Front Left Speaker Negative Wire (–) | Black (At Amplifier) |
| Front Right Speaker Positive Wire (+) | Purple/Green |
| Front Right Speaker Positive Wire (+) | Green (At Amplifier) |
| Front Right Speaker Negative Wire (–) | Purple/Orange |
| Front Right Speaker Negative Wire (–) | Orange (At Amplifier) |
| 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 (+) | Purple/Yellow |
| Rear Left Speaker Positive Wire (+) | Yellow (At Amplifier) |
| Rear Left Speaker Negative Wire (–) | Purple/Black |
| Rear Left Speaker Negative Wire (–) | Black (At Amplifier) |
| Rear Right Speaker Positive Wire (+) | Purple/Brown |
| Rear Right Speaker Positive Wire (+) | Red (At Amplifier) |
| Rear Right Speaker Negative Wire (–) | Purple/White |
| Rear Right Speaker Negative Wire (–) | Blue (At Amplifier) |
| Subwoofer Positive Wire (+) | Brown (At Amplifier) |
| Subwoofer Negative Wire (–) | White (At Amplifier) |
2021–2026 Hyundai Elantra Speaker Sizes and Locations
Use the speaker table below for your 2021, 2022, 2023, 2024, 2025, and 2026 Hyundai Elantra speaker sizes and locations.
| Speakers | Speaker Size & Location |
|---|---|
| Center Speaker Size | 3-1/2″ Speakers (Bose Audio) |
| Center Speaker Location | Middle of the Dash (Bose Audio) |
| Front Tweeter Speaker Size | 1″ Tweeters |
| Front Tweeter Speaker Location | Front Doors |
| Front Speaker Size | 6-3/4″ Speakers |
| Front Speaker Location | Front Doors |
| Rear Tweeter Speaker Size | N/A |
| Rear Tweeter Speaker Location | N/A |
| Rear Speaker Size | 5-1/4″ Speakers |
| Rear Speaker Location | Rear Doors |
| Subwoofer Speaker Size | 8″ Subwoofer (Bose Audio) |
| Subwoofer Speaker Location | Rear Deck (Bose Audio) |
Frequently Asked Questions
Does the Bose premium audio system need an amplifier bypass on the 2021–2026 Elantra?
Limited trims equipped with the factory Bose audio package route speaker output through a dedicated Amplifier rather than powering speakers directly from the head unit. Installing an Aftermarket Head Unit in one of these vehicles typically requires an amplifier bypass or bypass-and-retain harness so the factory amp continues to function correctly, or a full amp/speaker replacement if you’d rather not retain the factory system. SE and SEL trims without this option power the speakers directly from the head unit and do not need a bypass harness.
What harness adapter fits a 2021–2026 Hyundai Elantra radio installation?
The CN7-generation Elantra commonly pairs with the Metra 70-7304 Wire Harness Adapter family, but the correct version depends on whether your trim has the factory Bose Amplifier — amplified systems require an amp-bypass harness rather than the standard non-amplified harness used on SE and SEL trims. Confirm your exact trim and screen size before ordering, since 8-inch and 10.25-inch touchscreen systems can differ in their accessory and data wiring.
Will I lose my backup camera or safety features if I replace the factory touchscreen?
Nearly all CN7 Elantra trims include a standard backup camera and, on higher trims, additional driver-assistance sensors tied into the factory display. Replacing the factory Head Unit with an aftermarket radio typically requires a camera retention adapter to properly display the video feed, and any steering wheel-based safety alerts or blind-spot camera displays tied to the factory screen may not carry over to an aftermarket unit without additional integration hardware.
Does the 2024 facelift change the radio wiring on the CN7 Elantra?
The 2024 model year refresh updated the front grille, headlight and taillight design, wheel styles, and added rear side airbags along with other safety hardware, but Hyundai carried over the same factory Head Unit connector and core audio wiring used on 2021–2023 models. A harness adapter or camera retention module that fits a pre-facelift 2021–2023 Elantra will also fit a facelifted 2024–2026 model with the same trim-level audio configuration.
Does the 2021–2026 Hyundai Elantra have steering wheel audio controls?
Steering wheel-mounted audio controls are standard equipment across the entire CN7-generation Elantra lineup, including base SE trims. A SWC retention interface is strongly recommended when installing an Aftermarket Head Unit so the factory steering wheel buttons continue to operate volume, track, and voice command functions correctly.
Add Wiring Information
If you have verified 2021–2026 Hyundai Elantra 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 Elantra owners. If you have a question about your Hyundai Elantra stereo installation, post it below and our community will work to find an answer.