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2nd Gen Chassis Codes: YK3 • YK4 | Model Years: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 and 2026
This page provides the complete 2017–2026 Honda Ridgeline radio wiring diagram for the 2nd generation Ridgeline (chassis codes YK3 and YK4). Use this guide when replacing the factory head unit or troubleshooting audio in a 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 or 2026 Honda Ridgeline.
The 2nd generation Ridgeline is a full redesign that launched for 2017 on a new platform shared with the 3rd generation Pilot and 5th generation Odyssey. Honda’s Display Audio touchscreen system is standard across all trims, with Apple CarPlay and Android Auto available on Sport and above. The Black Edition trim introduced a premium audio system with an external amplifier. A significant Ridgeline-exclusive audio feature debuted in 2017: the in-bed audio system available on RTL-E and Black Edition trims, which includes weatherproof speakers mounted in the truck bed walls for outdoor listening. This in-bed system operates on a separate circuit from the cab audio system and adds a layer of wiring complexity not found in any other Honda model.
🔗 In This Guide
2017–2026 Honda Ridgeline Stereo Wiring Diagram
Use the wiring table below for your 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 and 2026 Honda Ridgeline stereo wire color codes, speaker wiring, and harness pinout.
| Wire Function | Wire Color & Location |
|---|---|
| Battery Constant Power Wire (12V+) | Violet (Pin #13 in 24-Pin Plug) |
| Accessory Switched Power Wire (12V+) | Yellow/Red (Pin #23 in 24-Pin Plug) |
| Ground Wire | Black (Pin #1 in 24-Pin Plug) |
| Illumination Wire | N/A |
| Dimmer Wire | N/A |
| Antenna Trigger Wire | N/A |
| Amplifier Trigger Wire | N/A |
| Factory Amplifier Location | Above the Passenger Kick Panel |
| Rear View Camera Video Positive (+) | |
| Rear View Camera Video Negative (–) | N/A |
| Dash Center Speaker Positive Wire (+) | Tan |
| Dash Center Speaker Negative Wire (–) | Light Green |
| 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 (+) | Green |
| Front Left Speaker Negative (–) | Red |
| Front Right Speaker Positive (+) | Light Blue |
| Front Right Speaker Negative (–) | Gray |
| 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 (+) | Gray |
| Rear Left Speaker Negative (–) | Brown |
| Rear Right Speaker Positive (+) | Pink |
| Rear Right Speaker Negative (–) | Blue |
| Subwoofer Positive Wire (+) | Red |
| Subwoofer Negative Wire (–) | White |
2017–2026 Honda Ridgeline Speaker Sizes and Locations
Use the speaker table below for your 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 and 2026 Honda Ridgeline speaker sizes and locations.
| Speakers | Speaker Size & Location |
|---|---|
| Center Speaker Size | 3 1/2″ Speakers |
| Center Speaker Location | Center of the Dash (RTL-E, Black Edition Trim) |
| Front Tweeter Speaker Size | N/A |
| Front Tweeter Speaker Location | N/A |
| Front Speaker Size | 6 1/2″ Speakers |
| Front Speaker Location | Front Doors |
| Rear Tweeter Speaker Size | 1″ Tweeters |
| Rear Tweeter Speaker Location | A-Pillars |
| Rear Speaker Size | 6 1/2″ Speakers |
| Rear Speaker Location | Rear Doors |
| Subwoofer Speaker Size | 8″ Subwoofer |
| Subwoofer Speaker Location | Behind the Rear Seat |
Frequently Asked Questions
Does the 2017–present Honda Ridgeline have in-bed speakers?
Yes. RTL-E and Black Edition trims of the 2nd generation Ridgeline include a factory in-bed audio system with weatherproof speakers mounted in the truck bed walls. This system is powered by a separate Amplifier and can play audio from the factory Head Unit or from a Bluetooth-connected device independently of the cab audio system. When replacing the factory Head Unit, verify that the in-bed audio system’s signal path is preserved through the wiring harness. The in-bed system circuit is separate from the main cab speaker wiring but shares a control interface with the factory Display Audio unit.
Does the 2017–2026 Honda Ridgeline support Apple CarPlay and Android Auto?
Apple CarPlay and Android Auto are available on Sport and above trims of the 2nd generation Ridgeline. The RT base trim does not include either feature. Wireless CarPlay became available on higher trims beginning with the 2022 model year refresh. The factory Display Audio system supports both features natively on equipped trims without requiring any aftermarket modification.
Where is the factory amplifier located in a 2017–2026 Honda Ridgeline Black Edition?
The Black Edition trim of the 2nd generation Ridgeline includes a factory Amplifier for its premium in-cab audio system. The amplifier is located in the rear cab area behind the rear seat or under a seat panel. The in-bed audio system uses a separate dedicated Amplifier mounted in the bed wall area near the in-bed speakers. When replacing the cab head unit in a Black Edition Ridgeline, the cab Amplifier must be addressed with a bypass harness. The in-bed amplifier operates on its own circuit and is less affected by a front head unit swap.
How do I retain steering wheel audio controls when replacing the radio in a 2017–2026 Honda Ridgeline?
The 2nd generation Ridgeline uses Honda’s CAN-bus steering wheel control system across all trims with SWC buttons. A CAN-bus compatible retention interface such as the iDatalink ADS-MSW or PAC SWI-CP2 is required. Standard resistive SWC interfaces used on 1st generation Ridgelines will not work with the CAN-bus system in the 2nd gen. This interface is essential for retaining steering wheel audio and phone control functions after a head unit replacement.
What size are the factory speakers in a 2017–2026 Honda Ridgeline?
The 2nd generation Ridgeline uses 6 1/2″ Speakers in the front door panels across all trims. Rear cab door speakers are also 6.5 inches on crew cab configurations. Black Edition and RTL-E trims with the premium audio system include A-pillar tweeters in addition to the door speakers. The in-bed speakers on RTL-E and Black Edition models are weatherproof units in a proprietary mounting location — these are not standard speaker sizes and are not easily replaced with conventional aftermarket speakers without custom fabrication.
Add Wiring Information
If you have verified 2017–2026 Honda Ridgeline 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 2nd generation Ridgeline owners. If you have a question about your 2nd gen Honda Ridgeline stereo installation, post it below and our community will work to find an answer.
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