
"The quickest route to high-quality sound without compromising the original quality."
When swapping your audio system or planning an upgrade in a Honda, something that’s easy to overlook is the wiring.
AC-H241 is a 24-pin lock harness for Honda vehicles designed to help you connect aftermarket audio without damaging the factory-side wiring as much as possible.
These harnesses aren’t the kind of parts that stand out, but they play a big role in how easy the installation is and how stable the final finish feels.
With a length of 1.8m, it’s easier to allow some slack in routing, and it’s also handy when you want to arrange the unit placement and cable paths. Since you don’t have to pull the wiring forcefully, you’ll notice the difference not only in workability, but also in how neatly bundled the parts are in areas you won’t see later.
In addition, the 24-pin lock connector provides a secure feel when connected, making it easier to reduce anxiety during installation and use—another reassuring point.
“I don’t want to cut the factory wiring.”
“I want to install aftermarket audio, but I’d like the result to look as clean as possible.”
For Honda owners like that, this is a part you’ll want to keep as your foundation.
When you want better sound, you may naturally focus on the speakers or the head unit itself, but in reality, once these connection areas are properly set up, the rest of the installation also goes more smoothly. Even when you log on, you’ll think through the assembly method—including wiring handling and fitment—based on the vehicle’s current condition and the system you’re about to build. The areas you can’t see tend to make the biggest difference later.
Note that when using it in a front-speaker-only network mode, you will need additional modified wiring separately.
So, it’s best to confirm based on your current vehicle setup and what you plan to install, rather than deciding based on the product alone.
For those who want to take the first step toward installing aftermarket audio while not significantly compromising the convenience of the factory setup.
Even though AC-H241 isn’t flashy, it’s an important cable that supports reliable installation and a clean final finish.
| Compatible vehicle model name | Model year | remarks |
|---|---|---|
| HONDA FITGK3・4 | 2017-06 ~ current | |
| HONDA FITGK5・6 | 2017-06 ~ current | |
| HONDA FITGK3・4・5・6 | 2013-09 ~ 2017-05 | |
| HONDA FITGR1・2・3・4・5・6・7・8 | 2020-02 ~ 2022-09 | |
| HONDA FITGR/GS3・4・5・6・7・8 | 2022-10 ~ current | |
| HONDA VEZELRU1・2・3・4後期 | 2018-02 ~ 2021-03 | |
| HONDA VEZELRU1・2・3・4前期 | 2013-12 ~ 2018-01 | |
| HONDA VEZELRV3・4・5・6 | 2021-04 ~ current | |
| HONDA NBOXJF1・2後期 | 2013-12 ~ 2017-07 | |
| HONDA NBOXJF1・2前期 | 2011-12 ~ 2013-11 | |
| HONDA NBOXJF3・4後期 | 2020-12 ~ 2023-10 | |
| HONDA NBOXJF5・6 | 2023-10 ~ current | |
| HONDA NBOXJF3・4前期 | 2017-09 ~ 2020-11 | |
| HONDA NONEJF1・2前期 | 2014-12 ~ 2017-12 | |
| HONDA NONEJG1・2後期3 | 2017-12 ~ 2020-10 | |
| HONDA NONEJG1・2後期 | 2014-05 ~ 2015-06 | |
| HONDA NONEJG1・2前期 | 2012-11 ~ 2014-04 | |
| HONDA NONEJG3・4 | 2020-11 ~ current | |
| HONDA NWGNJH3・4前期 | 2019-08 ~ 2022-08 | |
| HONDA NWGNJH1・2後期 | 2016-06 ~ 2019-07 | |
| HONDA NWGNJH1・2前期 | 2013-11 ~ 2016-05 | |
| HONDA NWGNJH3・4後期 | 2022-09 ~ current | |
| HONDA STEPWAGONRP系後期 | 2017-09 ~ 2022-05 | |
| HONDA STEPWAGONRP系前期 | 2015-04 ~ 2017-08 | |
| HONDA STEPWAGONRP6/7/8 | 2022-05 ~ current | |
| HONDA FREEDGB5・6・7・8前期 | 2016-09 ~ 2019-09 | |
| HONDA FREEDGB5・6・7・8後期 | 2019-10 ~ 2024-06 | |
| HONDA FREEDGT1・2・3・4・5・6・7・8 | 2024-06 ~ current | |
| HONDA ODYSSEYRC1・2前期 | 2013-11 ~ 2022-09 | |
| HONDA ODYSSEYRC系前期 | 2017-11 ~ 2020-10 | |
| HONDA ODYSSEYRC系後期 | 2020-11 ~ 2022-09 | |
| HONDA GRACEGM6・9後期 | 2017-07 ~ 2020-07 | |
| HONDA GRACEGM4・5後期 | 2014-12 ~ 2017-06 | |
| HONDA GRACEGM4・5前期 | 2014-12 ~ 2017-06 | |
| HONDA GRACEGM6・9前期 | 2014-12 ~ 2017-06 | |
| HONDA CIVICFC1 | 2017-07 ~ 2021-08 | |
| HONDA CIVICFK7 | 2017-07 ~ 2021-08 | |
| HONDA CIVICFL1 | 2021-09 ~ current | |
| HONDA CIVICFL5 | 2021-09 ~ 2010-01 |