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AP1 Chassis Codes: AP1 | Model Years: 2000, 2001, 2002, and 2003
This page contains the complete 2000–2003 Honda S2000 radio wiring diagram for the AP1 chassis. Use this guide when installing an aftermarket head unit or troubleshooting your factory stereo in a 2000, 2001, 2002, or 2003 Honda S2000.
The original AP1 S2000 launched for the 2000 model year with the high-revving F20C 2.0L engine. As a two-seat roadster, the factory audio system was compact, with door-mounted speakers as the only factory speaker location — there is no rear seat or rear deck to house additional speakers. The factory head unit used Honda’s standard connector, and no factory amplifier was fitted on any AP1 trim, making aftermarket head unit installation straightforward.
🔗 In This Guide
2000–2003 Honda S2000 Stereo Wiring Diagram
Use the wiring table below for your 2000, 2001, 2002, and 2003 Honda S2000 stereo wire color codes, speaker wiring, and harness pinout.
| Wire Function | Wire Color & Location |
|---|---|
| Battery Constant Power Wire (12V+) | White/Blue |
| Accessory Switched Power Wire (12V+) | White/Red |
| Ground Wire | Black |
 (Simple Radio Install, Keep Steering Wheel Controls and Use Factory Amplifier) |
|
| Illumination Wire | Red/Black |
| Dimmer Wire | Red |
| Antenna Trigger Wire | Yellow/Green |
| 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 (+) | Green/Yellow |
| Front Left Speaker Negative (–) | Gray/Red |
| Front Right Speaker Positive (+) | Green/Black |
| Front Right Speaker Negative (–) | Gray/Red |
| 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/Yellow |
| Rear Left Speaker Negative (–) | Gray/Red |
| Rear Right Speaker Positive (+) | Red/Yellow |
| Rear Right Speaker Negative (–) | Brown/White |
| Subwoofer Positive Wire (+) | N/A |
| Subwoofer Negative Wire (–) | N/A |
2000–2003 Honda S2000 Speaker Sizes and Locations
Use the speaker table below for your 2000, 2001, 2002, and 2003 Honda S2000 speaker sizes and locations.
| Speakers | Speaker Size & Location |
|---|---|
| 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 | 3″ Speakers |
| Rear Speaker Location | Rear Headrest |
| Subwoofer Speaker Size | N/A |
| Subwoofer Speaker Location | N/A |
Frequently Asked Questions
What wiring harness adapter fits a 2000–2003 Honda S2000 AP1?
The AP1 S2000 uses a Honda 10-pin and 6-pin radio connector. Metra 70-1729 is the standard harness adapter for this application. The S2000’s factory head unit is a single-DIN unit, and the harness adapter allows a clean aftermarket installation without cutting the original wiring. Given the collector value of well-maintained S2000s, preserving the factory wiring is particularly important.
How many speakers does the 2000–2003 Honda S2000 have from the factory?
The AP1 S2000 is a two-seat roadster with no rear seating, so all factory audio is routed to the front door speakers only. The factory setup includes a 6 1/2″ Speakers in each front door. There are no rear speakers, no rear deck, and no factory subwoofer on any AP1 S2000. Any rear audio or subwoofer installation is a full custom addition.
Does the 2000–2003 Honda S2000 have a factory amplifier?
No. The AP1 S2000 uses a passive, non-amplified audio system with the head unit driving the two door speakers directly. There is no factory amplifier on any AP1 configuration. This simplicity is typical of Honda’s approach to the S2000 as a driver’s car where audio electronics were kept minimal to save weight.
What size are the front door speakers in a 2000–2003 Honda S2000?
The AP1 S2000 uses 6 1/2″ Speakers in the front door panels. Due to the convertible soft top and associated wind noise at speed, many S2000 owners upgrade to higher-sensitivity aftermarket speakers that produce better sound at lower volume levels, or add a small amplifier to drive the door speakers with more power than the factory or aftermarket head unit can provide.
Is it difficult to replace the radio in a 2000–2003 Honda S2000?
Replacing the radio in an AP1 S2000 is straightforward by Honda standards. The factory radio is a standard single-DIN unit accessed by removing the center console trim panel surrounding the shifter and radio assembly. The process requires panel pry tools, a Phillips screwdriver, and the harness adapter. No special tools or software are needed, and the entire swap can be completed in under an hour.
Add Wiring Information
If you have verified 2000–2003 Honda S2000 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 S2000 owners. If you have a question about your Honda S2000 stereo installation, post it below and our community will work to find an answer.
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