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3rd Gen Chassis Codes: ZE4 | Model Years: 2019, 2020, 2021, and 2022
This page provides the complete 2019–2022 Honda Insight radio wiring diagram for the 3rd generation Insight (chassis code ZE4). Use this guide when replacing the factory head unit or troubleshooting audio in a 2019, 2020, 2021, or 2022 Honda Insight.
The 3rd generation Insight returned in 2019 as a four-door fastback sedan built on the 10th generation Civic platform (ZE4). Unlike the previous two generations, this Insight used a two-motor series-parallel hybrid system rather than Honda’s IMA system, producing 151 horsepower total. It came in three trim levels: LX, EX, and Touring. The factory Display Audio system includes Apple CarPlay and Android Auto on EX and Touring trims. The Touring trim adds a premium audio system with additional speakers and an external amplifier. Honda Sensing driver assistance is standard on all trims and integrated into the Display Audio system. The Insight was discontinued after the 2022 model year.
🔗 In This Guide
2019–2022 Honda Insight Stereo Wiring Diagram
Use the wiring table below for your 2019, 2020, 2021, and 2022 Honda Insight 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+) | White |
| Ground Wire | Black |
 (Simple Radio Install, Keep Steering Wheel Controls and Use Factory Amplifier) |
|
| Illumination Wire | Yellow |
| Dimmer Wire | N/A |
| Antenna Trigger Wire | N/A |
| 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 (+) | Pink |
| Front Left Speaker Negative (–) | Gray |
| Front Right Speaker Positive (+) | Red |
| Front Right Speaker Negative (–) | Black |
| 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 (+) | 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 |
2019–2022 Honda Insight Speaker Sizes and Locations
Use the speaker table below for your 2019, 2020, 2021, and 2022 Honda Insight speaker sizes and locations.
| Speakers | Speaker Size & Location |
|---|---|
| Center Speaker Size | 3 1/2″ Speaker |
| Center Speaker Location | Middle of the Dash (Touring Trim) |
| 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 |
| Rear Tweeter Speaker Location | Rear Deck (EX, Touring Trim) |
| Rear Speaker Size | 6 1/2″ Speakers |
| Rear Speaker Location | Rear Deck |
| Subwoofer Speaker Size | 8″ Subwoofer |
| Subwoofer Speaker Location | Rear Deck (Touring Trim) |
Frequently Asked Questions
Does the 2019–2022 Honda Insight support Apple CarPlay and Android Auto?
Apple CarPlay and Android Auto are standard on EX and Touring trims of the 3rd generation Insight. The LX base trim does not include either feature. The Display Audio system on EX and Touring uses a 8-inch touchscreen with both CarPlay and Android Auto accessible through the factory interface. No aftermarket modification is required to use CarPlay or Android Auto on equipped trims — connect your phone via USB cable (wireless CarPlay was not available on the 3rd gen Insight).
Does the 2019–2022 Honda Insight Touring have a factory amplifier?
Yes. The Touring trim of the 3rd generation Insight includes a factory premium audio system with an external Amplifier and additional speaker locations compared to LX and EX trims. The Amplifier is located in the rear of the vehicle behind interior trim panels. LX and EX trims use a non-amplified passive speaker configuration driven directly from the Display Audio head unit. When replacing the head unit in a Touring Insight, a dedicated amplifier bypass harness is required in addition to the standard radio harness adapter.
How do I retain steering wheel audio controls when replacing the radio in a 2019–2022 Honda Insight?
The 3rd generation Insight uses Honda’s CAN-bus steering wheel control system on all trims. A CAN-bus compatible retention interface such as the iDatalink ADS-MSW or PAC SWI-CP2 is required to retain steering wheel audio functions after a head unit replacement. Standard resistive SWC interfaces used on older Honda models are not compatible with the CAN-bus system in the ZE4 Insight. Because the 3rd gen Insight shares its Civic platform, SWC interfaces confirmed for the 10th generation Civic are generally compatible.
What size are the factory speakers in a 2019–2022 Honda Insight?
The 3rd generation Insight uses 6 1/2″ Speakers in the front door panels across all trims. Rear door speakers are also 6.5 inches. Touring trims with the premium audio system include additional speaker locations and component tweeters in the A-pillars. Because the ZE4 Insight shares its door panel architecture with the 10th generation Civic, aftermarket speaker fitment information confirmed for the 2016–2021 Civic sedan applies directly to the Insight. Standard 6 1/2″ Aftermarket Speakers are a direct fit in the door locations on non-amplified LX and EX trims.
Can I replace the factory Display Audio head unit in a 2019–2022 Honda Insight?
Replacing the factory Display Audio unit in the 3rd generation Insight is possible but involves addressing Honda Sensing integration, which uses the factory display to present forward collision and lane departure alerts. An Aftermarket Head Unit replacement requires routing Honda Sensing alerts to the new display or using an integration module that preserves those warning functions. Many 3rd gen Insight owners prefer to retain the factory Display Audio unit and instead add an external Amplifier and Subwoofer to the factory speaker outputs, which improves audio significantly without disrupting the Honda Sensing display.
Add Wiring Information
If you have verified 2019–2022 Honda Insight 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 3rd generation Insight owners. If you have a question about your 3rd gen Honda Insight stereo installation, post it below and our community will work to find an answer.
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