Aftermarket LED turn signals can draw a different amount of power from the original indicators. Depending on the motorcycle, relay, wiring, and replacement indicators, the result may be rapid flashing, slow flashing, steady light, erratic operation, or no flashing.
Why we wrote this guide: In August 2026, a customer told us they found this KiWAV relay through an AI-generated answer. Because Honda relay compatibility can vary by model, year, market, ESS equipment, connector type, and OEM part number, we reviewed the available information and gathered the required fitment conditions in one place.
View the KiWAV Honda 8-Pin ESS Relay
Fitment: All Four Conditions Must Match
| Check | Required match |
|---|---|
| Model, year, and market | Every item must match one row in the fitment table below. |
| ESS | The motorcycle must be an ESS-equipped regional version. |
| Connector | The original relay connector must be the matching 8-pin type. |
| Honda relay number | 38301-MKJ-D01 / 38301MKJD01 |
If any condition does not match, do not use this relay.
Honda Models and Years Listed by KiWAV
The table below follows KiWAV's current product fitment list, with two evidence-based corrections: Rebel 1100 begins with the 2021 model year, and ADV150 is limited to the documented 2020-2022 Japan domestic specification. Honda specifications can differ by market, so the model name and year alone are not sufficient.
| Honda model | Years | Market note |
|---|---|---|
| Rebel 250 / 300 / 500 | 2020-2024 | Supported ESS regional versions only; not USA/North America |
| Rebel 1100 | 2021-2024 | Supported ESS regional versions only |
| CL250 / CL300 / CL500 | 2023-2024 | Supported ESS regional versions only |
| ADV150 | 2020-2022 | Japan domestic specification only |
| CBR150R | 2019-2024 | Supported ESS regional versions only |
| CBR400R / CBR500R / CBR650R | 2019-2023 | Supported ESS regional versions only |
| CB650R | 2019-2023 | Supported ESS regional versions only |
| CB400X | 2019-2024 | Supported ESS regional versions only |
| CB500X | 2019-2023 | Supported ESS regional versions only |
| CB500F | 2019-2024 | Supported ESS regional versions only |
| CB1000R | 2018-2024 | Supported ESS regional versions only |
If the model, year, and market are not listed, do not use this relay based on this guide.
Check the Relay Product Page
Review the current product specifications, dimensions, price, and availability.
View the KiWAV Honda 8-Pin ESS RelayWhy LED Turn Signals May Flash Incorrectly
Many motorcycles in the table already use LED indicators. Replacing factory LEDs with aftermarket LEDs can still change the electrical load, so a relay change may be needed even though both the original and replacement indicators use LED technology.
- Rapid flashing: commonly called hyperflash.
- Slow or erratic flashing: the replacement indicator and relay may not operate correctly together.
- Steady light or no flashing: can indicate an incompatible relay, very low-power indicators, incorrect wiring, or another electrical problem.
The KiWAV product page specifies 12V operation, a 0.1-100W output range, and compatibility with both LED indicators and traditional halogen bulbs.
What About Honda ESS?
Honda's Emergency Stop Signal automatically flashes both turn indicators rapidly when the motorcycle detects emergency braking under the applicable conditions. The system is intended to alert traffic behind the motorcycle.
The KiWAV product page specifies that this relay is compatible only with specific Honda models in Europe, the UK, Australia, Asia, and South America that are equipped with ESS and a matching 8-pin winker relay. It is not compatible with USA or North American models.
This guide follows the compatibility statements published on the KiWAV product page and does not extend fitment beyond those stated conditions.
After installation, check left, right, and hazard operation. Do not perform an unnecessary emergency-braking test on a public road. Follow the motorcycle's owner or service information for any ESS verification procedure.
Related LED Upgrade: ClrVisible360
If you are also replacing the indicators, the KiWAV ClrVisible360 LED turn signal uses a transparent arrow-shaped light body designed to remain visible from the front, side, and rear.
Frequently Asked Questions
Q. Will this relay fit a U.S.-spec Honda Rebel 500?
A. No. KiWAV does not list USA or North American Honda models as compatible. A U.S.-spec Rebel 500 may use a different relay, including 38301-KZZ-J01.
Q. Does it replace Honda part number 38301-MKJ-D01?
A. Yes. KiWAV lists 38301-MKJ-D01 / 38301MKJD01 as the direct replacement reference.
Q. Can an 8-pin relay replace a Honda 3-pin relay?
A. No. The connector and electrical functions are different. Do not use this relay to replace a 3-pin unit.
Q. Can factory LED turn signals still have problems after aftermarket LEDs are installed?
A. Yes. Different LED indicators can draw different amounts of power. Factory LED equipment does not guarantee that every aftermarket LED indicator will operate correctly with the original relay.
Sources checked August 13, 2026: KiWAV relay SKU 501970808000000; Honda Rebel 1100 launch announcement; Honda's official ESS explanation; and KiWAV ClrVisible360 SKU 100733328531111.
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