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2004–2006 Chassis Codes: XD2 (3rd Generation, Facelift) | Model Years: 2004, 2005, and 2006
This page provides the complete 2004–2006 Hyundai Elantra radio wiring diagram for the facelifted XD2 chassis. Use this guide when installing an aftermarket head unit or troubleshooting your factory stereo in a 2004, 2005, or 2006 Hyundai Elantra.
Hyundai gave the Elantra a significant mid-cycle update for the 2004 model year, revising the front and rear fascias, redesigning the center stack and HVAC controls, and updating the available head unit lineup. Limited trims added a factory 6-disc in-dash CD changer as an option, and some late-production 2006 models were prepped for XM satellite radio in certain markets. The GT hatchback continued alongside the sedan through the end of this generation, which was replaced by an all-new HD-generation Elantra for 2007. Because the redesigned dash changed some of the wiring routed to the center stack, harness pin assignments on 2004–2006 models do not always line up cleanly with a pre-facelift 2001–2003 harness, so use the wiring data on this page specifically for facelifted models.
🔗 In This Guide
2004–2006 Hyundai Elantra Stereo Wiring Diagram
Use the wiring table below for your 2004, 2005, and 2006 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 | Gray/Orange |
| Amplifier Trigger Wire | N/A |
| Factory Amplifier Location | N/A |
| 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 (–) | Brown |
| Front Right Speaker Positive Wire (+) | Green |
| Front Right Speaker Negative Wire (–) | Orange |
| 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 (–) | Black |
| Rear Right Speaker Positive Wire (+) | Orange |
| Rear Right Speaker Negative Wire (–) | Blue |
| Subwoofer Positive Wire (+) | N/A |
| Subwoofer Negative Wire (–) | N/A |
2004–2006 Hyundai Elantra Speaker Sizes and Locations
Use the speaker table below for your 2004, 2005, and 2006 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″ x 9″ Speakers (Sedan) |
| Rear Speaker Location | Rear Deck (Sedan) |
| Rear Speaker Size | 5-1/4″ Speakers (Hatchback & GT Trim) |
| Rear Speaker Location | Rear Doors (Hatchback & GT Trim) |
| Subwoofer Speaker Size | N/A |
| Subwoofer Speaker Location | N/A |
Frequently Asked Questions
Does the 2004–2006 Hyundai Elantra use the same harness adapter as the 2001–2003 model?
The facelifted XD2 dash carried over the same general connector shape used on 2001–2003 models, but Hyundai revised some of the wiring routed to the redesigned center stack. Because of this, a harness adapter that fits a 2001–2003 Elantra will not always align correctly with a 2004–2006 model, so confirm wire colors and pin locations at your factory plug before assuming a pre-facelift harness diagram carries over directly.
Is there a factory amplifier or premium audio option on the 2004–2006 Hyundai Elantra?
Standard and GLS trims on the facelifted XD2 Elantra do not include a factory amplifier, with speakers driven directly from the Head Unit. Limited trims offered an optional factory 6-disc in-dash CD changer, but this changer is fed audio signal through the head unit rather than through a separate amplified stage, so no Amplifier bypass harness is required for a typical head unit swap.
Does the 2004–2006 Hyundai Elantra have steering wheel audio controls?
Steering wheel-mounted audio controls were not standard equipment on the XD2-generation Elantra. Steering wheels on this generation typically include cruise control switches on Limited and GT trims, but factory radio or track-control buttons on the wheel were not offered. No SWC retention interface is required when replacing the Head Unit on any 2004–2006 model.
What dash kit fits a 2004–2006 Hyundai Elantra head unit installation?
The 2004 facelift introduced a redesigned center stack with different vent and climate control trim shapes than the 2001–2003 dash, so a Dash Kit made specifically for pre-facelift models will not fit correctly. Look for a kit labeled for the 2004–2006 Elantra specifically, and confirm whether your trim has the single-DIN or optional double-DIN-style factory opening before ordering.
Does the optional XM satellite radio prep affect aftermarket head unit wiring on this generation?
Some late-production 2006 Elantra models in certain markets included factory wiring prepped for an XM satellite tuner module mounted separately from the Head Unit. If your Elantra has this prep, there may be an additional data or antenna connector near the Head Unit harness that is not used by a standard aftermarket radio; it can typically be left disconnected and tucked behind the dash without affecting a standard aftermarket installation.
Add Wiring Information
If you have verified 2004–2006 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.