📋 Disclosure: As an Amazon Associate, ModifiedLife earns from qualifying purchases. This helps keep our guides free — at no extra cost to you.
2007–2010 Chassis Codes: HD (4th Generation) | Model Years: 2007, 2008, 2009, and 2010
This page provides the complete 2007–2010 Hyundai Elantra radio wiring diagram for the fourth-generation HD chassis. Use this guide when installing an aftermarket head unit or troubleshooting your factory stereo in a 2007, 2008, 2009, or 2010 Hyundai Elantra.
The HD Elantra was sold in the U.S. exclusively as a sedan; the hatchback body style was dropped from the Elantra sedan lineup for this generation. Hyundai launched the separate Elantra Touring wagon in 2009 on a different platform shared with the Hyundai i30, and that model is covered in its own dedicated wiring guide rather than on this page. Over the course of this generation, Hyundai added available Bluetooth hands-free calling and USB/auxiliary input on higher trims starting around the 2009 model year, and Limited trims gained factory steering wheel-mounted audio controls for the first time in Elantra history.
🔗 In This Guide
2007–2010 Hyundai Elantra Stereo Wiring Diagram
Use the wiring table below for your 2007, 2008, 2009, and 2010 Hyundai Elantra stereo wire color codes, speaker wiring, and harness pinout.
| Wire Function | Wire Color & Location |
|---|---|
| Battery Constant Power Wire (12V+) | Red |
| Accessory Switched Power Wire (12V+) | Yellow |
| Ground Wire | Black |
 (Simple Radio Install, Keep Steering Wheel Controls and Use Factory Amplifier) |
|
| Illumination Wire | Pink |
| Dimmer Wire | N/A |
| Antenna Trigger Wire | Yellow/Orange |
| Amplifier Trigger Wire | Blue |
| Factory Amplifier Location | Right Side of the Trunk. |
| Rear View Camera Video Positive Wire (+) | N/A |
| Rear View Camera Video Negative Wire (–) | N/A |
| Center Speaker Positive Wire (+) | N/A |
| 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 (+) | White |
| Front Left Speaker Negative Wire (–) | Black |
| Front Right Speaker Positive Wire (+) | Yellow |
| Front Right Speaker Negative Wire (–) | Black |
| 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 (+) | Red |
| Rear Left Speaker Negative Wire (–) | Blue |
| Rear Right Speaker Positive Wire (+) | Red |
| Rear Right Speaker Negative Wire (–) | Blue |
| Subwoofer Positive Wire (+) | N/A |
| Subwoofer Negative Wire (–) | N/A |
2007–2010 Hyundai Elantra Speaker Sizes and Locations
Use the speaker table below for your 2007, 2008, 2009, and 2010 Hyundai Elantra speaker sizes and locations.
| Speakers | Speaker Size & Location |
|---|---|
| Center Speaker Size | N/A |
| Center Speaker Location | N/A |
| Front Tweeter Speaker Size | 1″ Tweeters |
| Front Tweeter Speaker Location | Front Doors |
| Front Speaker Size | 6-1/2″ Speakers |
| Front Speaker Location | Front Doors |
| Rear Tweeter Speaker Size | N/A |
| Rear Tweeter Speaker Location | N/A |
| Rear Speaker Size | 6-1/2″ Speakers |
| Rear Speaker Location | Rear Doors |
| Subwoofer Speaker Size | N/A |
| Subwoofer Speaker Location | N/A |
Frequently Asked Questions
What harness adapter fits a 2007–2010 Hyundai Elantra radio installation?
The HD-generation Elantra continues to use the Metra 70-7304 Wire Harness Adapter family common to Hyundai vehicles of this era. Verify wire colors at your factory plug before splicing, since the addition of Bluetooth and USB/auxiliary wiring on higher trims starting around 2009 introduced extra connectors near the head unit that were not present on base 2007–2008 models.
Does the 2007–2010 Hyundai Elantra have steering wheel audio controls?
Limited trims on the HD-generation Elantra were the first in Elantra history to offer factory steering wheel-mounted audio controls, typically alongside Bluetooth hands-free calling on later model years. If your Elantra has these controls, a SWC retention interface module is recommended when installing an Aftermarket Head Unit so the buttons continue to control volume and track functions. Base and GLS trims without this factory option do not require a SWC interface.
Is there a factory amplifier in a 2007–2010 Hyundai Elantra?
No HD-generation Elantra sold in the U.S. market was offered with a factory Amplifier or branded premium sound system; that upgrade did not arrive on the Elantra sedan lineup until later generations. All 2007–2010 trims power the door speakers directly from the head unit, so no Amplifier bypass harness is needed for a standard aftermarket head unit installation.
Does adding a factory USB/auxiliary input change the radio wiring on this generation?
Trims equipped with the factory auxiliary or USB input route that connection through a small module near the Head Unit rather than through the head unit’s main wiring harness. When replacing the factory radio with an aftermarket unit, this factory aux/USB module is typically bypassed entirely since the new Head Unit provides its own input options, and the factory module can be left unused behind the dash.
Is the 2007–2010 Elantra Touring wagon covered by this wiring diagram?
No. The Elantra Touring wagon introduced for the 2009 model year is built on a different platform shared with the Hyundai i30 and uses a different factory Head Unit connector and dash layout than the HD sedan covered on this page. Touring owners should reference a wiring guide specific to that model rather than this sedan-focused diagram.
Add Wiring Information
If you have verified 2007–2010 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.