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9th Gen Chassis Codes: FB • FG4 | Model Years: 2012, 2013, 2014, and 2015
This page provides the complete 2012–2015 Honda Civic radio wiring diagram for the 9th generation Civic (chassis codes FB and FG4). Use this guide when replacing the factory head unit or troubleshooting stereo issues in a 2012, 2013, 2014, or 2015 Honda Civic.
The 9th generation Civic received mixed reviews at launch but remained a strong seller. The EX and EX-L trims featured a factory 7-inch display audio system, while lower trims used a standard single-DIN head unit. Factory amplified audio was available on some trims and must be accounted for when performing a head unit swap. A steering wheel control retention interface is recommended on all trims that have factory SWC buttons.
🔗 In This Guide
2012–2015 Honda Civic Stereo Wiring Diagram
Use the wiring table below for your 2012, 2013, 2014, and 2015 Honda Civic stereo wire color codes, speaker wiring, and harness pinout.
| Wire Function | Wire Color & Location |
|---|---|
| Battery Constant Power Wire (12V+) | White |
| Accessory Switched Power Wire (12V+) | Violet |
| Ground Wire | Black |
| Illumination Wire | Gray |
| Dimmer Wire | Red |
| Antenna Trigger Wire | Black |
| Amplifier Trigger Wire | N/A |
| Factory Amplifier Location | N/A |
| Rear View Camera Video Positive (+) | N/A |
| Rear View Camera Video Negative (–) | N/A |
| Dash Center Speaker Positive Wire (+) | N/A |
| Dash Center Speaker Negative Wire (–) | N/A |
| Front Left Tweeter Positive (+) | N/A |
| Front Left Tweeter Negative (–) | N/A |
| Front Right Tweeter Positive (+) | N/A |
| Front Right Tweeter Negative (–) | N/A |
| Front Left Speaker Positive (+) | Light Green |
| Front Left Speaker Negative (–) | Pink |
| Front Right Speaker Positive (+) | Gray |
| Front Right Speaker Negative (–) | Brown |
| Rear Left Tweeter Positive (+) | N/A |
| Rear Left Tweeter Negative (–) | N/A |
| Rear Right Tweeter Positive (+) | N/A |
| Rear Right Tweeter Negative (–) | N/A |
| Rear Left Speaker Positive (+) | Yellow |
| Rear Left Speaker Negative (–) | Brown |
| Rear Right Speaker Positive (+) | Blue |
| Rear Right Speaker Negative (–) | Orange |
| Subwoofer Positive Wire (+) | N/A |
| Subwoofer Negative Wire (–) | N/A |
2012–2015 Honda Civic Speaker Sizes and Locations
Use the speaker table below for your 2012, 2013, 2014, and 2015 Honda Civic 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 | N/A |
| Rear Tweeter Speaker Location | N/A |
| Rear Speaker Size | 6 1/2″ Speakers |
| Rear Speaker Location | Rear Deck |
| Subwoofer Speaker Size | N/A |
| Subwoofer Speaker Location | N/A |
Frequently Asked Questions
Does the 2012–2015 Honda Civic have a factory touchscreen?
EX and EX-L trims of the 9th generation Civic include a factory 7-inch Display Audio touchscreen with Pandora, Bluetooth, and backup camera support. LX and lower trims use a standard non-touch head unit. The touchscreen unit uses a different connector and dash integration than the standard unit, so specify your exact trim when sourcing aftermarket replacement parts or adapters.
What harness adapter fits a 2012–2015 Honda Civic?
The 9th generation Civic uses a Honda radio connector compatible with the Metra 70-1729 Wire Harness Adapter for non-amplified trims. For amplified configurations (EX-L and certain EX grades), an amplifier bypass harness is also needed. The Display Audio touchscreen unit on EX/EX-L trims uses additional interface connections for the backup camera and vehicle data that must be addressed in a full head unit replacement.
Does the 2012–2015 Honda Civic Si have a factory subwoofer?
The 9th generation Civic Si does not include a factory Subwoofer as standard equipment. However, the Si’s sport-tuned audio system includes a slightly different EQ signature in the factory head unit compared to base trims. When replacing the Si’s head unit, any EQ adjustments programmed into the factory unit will be lost and need to be replicated in the aftermarket unit’s settings.
What is the rear speaker size in a 2012–2015 Honda Civic sedan?
The 9th generation Civic sedan uses 6″ x 9″ Speakers on the rear package shelf. Coupe models use a 6 1/2″ Rear Speaker location in a different position. Confirm your body style’s rear speaker dimensions before ordering. The 6″ x 9″ Rear Deck Speakers in the sedan is one of the easier upgrade points in this generation due to the large opening size.
How do I improve audio quality in a 2012–2015 Honda Civic without replacing the head unit?
On the 9th generation Civic, a significant audio quality improvement can be achieved by replacing the factory door speakers with high-quality aftermarket units while retaining the factory head unit. Adding sound deadening material (such as Dynamat or Kilmat) to the interior of the door panels further improves speaker performance by reducing panel resonance. A Compact Powered Subwoofer added to the factory audio system’s speaker-level outputs rounds out the low-frequency response without requiring a head unit swap.
Add Wiring Information
If you have verified 2012–2015 Honda Civic 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 9th generation Civic owners. If you have a question about your 9th gen Honda Civic stereo installation, post it below and our community will work to find an answer.