Here is the relevant technical text for the Omron G8B-201-01 relay.
The Omron G8B-201-01 is a miniature printed circuit board (PCB) power relay. It is widely used in automotive and industrial applications for switching moderate loads with a low control signal.
This guide covers identification, specifications, wiring, testing, and safety precautions.
The Omron G8B-201-01 is more than just a switch; it is a robust, engineered solution for high-reliability automotive and industrial applications. Its ability to handle 20 amps continuously, survive extreme temperatures from -40°C to +85°C, and resist vibration makes it a cornerstone component in engine control units, body control modules, and aftermarket power systems.
When designing or repairing a circuit that requires a 12V, 20A SPST-NO relay, the G8B-201-01 from Omron should be your first choice. Always respect its pinout, protect the coil with a flyback diode, and ensure the PCB traces are thick enough to handle the current. By understanding this component’s capabilities and limitations, you ensure a safer, longer-lasting electrical system.
Final Pro Tip: Keep a few of these relays in your workshop. They are ideal for custom automotive wiring projects where you need to switch a high-power device directly from a microcontroller or a low-current switch. Pair them with an inline fuse, and you have a professional-grade power control solution.
Disclaimer: Specifications and data are based on Omron’s official documentation. Always consult the latest datasheet before finalizing a design.
The Omron G8B-201-01 Go to product viewer dialog for this item.
is a specialized automotive flasher relay primarily used in Honda motorcycles and scooters to control turn signal indicators. Known for its reliability in demanding environments, it serves as a critical component in the lighting systems of various classic and modern bikes. Key Functions and Applications
The primary role of the Omron G8B-201-01 is to manage the rhythmic "flashing" of a vehicle's turn signals. It is an OEM (Original Equipment Manufacturer) part found in numerous Honda models, including: omron g8b-201-01
Honda CBR Series: Including the CBR 600 F4 and Hornet models.
Honda Shadow Series: Common in VT1100 and Spirit 750 configurations. Honda Nighthawk: Specifically the CB750 models.
Other Models: Featured in the Honda V65 Sabre (VF1100S) and various 50cc scooters. Technical Specifications
While this specific model is often identified by its application, it shares the high-quality engineering standards of the Omron Automotive Relay family:
Operating Voltage: 12V DC, the standard for most motorcycle electrical systems.
Terminal Configuration: Typically features a 3-pin "mini faston" or spade-type layout for easy plug-and-play installation.
Environmental Resistance: Designed to operate in a wide temperature range, often from -40°C to +105°C or higher, ensuring stability even near the engine.
Durability: Engineered for high mechanical and electrical endurance, often rated for over 100,000 electrical operations. Troubleshooting and Replacement
Failure of the G8B-201-01 typically manifests as turn signals that stay on without flashing, flash too rapidly ("hyper-flashing"), or do not activate at all. Here is the relevant technical text for the
If you are seeking a replacement, verify compatibility with your specific vehicle year and model. While the G8B-201-01 is a classic original, modern equivalents from retailers like MotoShopItalia or eBay may offer LED-compatible versions if you have upgraded your bike's bulbs to LEDs. Cross-Reference Codes: Honda OEM: 38301-MEG-000, 38301-MR7-004, 38301-MG9-681. Mitsuba: FR-3303. G8NB - Omron
This unit is an electronic flasher relay designed for 12V automotive electrical systems . Unlike standard power relays that simply open or close a circuit, the G8B-201-01 includes internal circuitry that pulses the electrical current to create the rhythmic "blinking" effect for turn signals and hazard lights . Key Specifications
While specific datasheets for older automotive-specific part numbers like the G8B-201-01 can be rare, it shares performance characteristics with Omron’s broader automotive relay lines:
Operating Voltage: 12V DC (Standard for passenger vehicles) .
Application: Primarily used as a flasher unit for turn signals and hazard lamps .
Physical Design: Typically a rectangular black plastic housing with a 3-pin connector layout .
Temperature Tolerance: Designed to withstand engine bay or cabin extremes, often rated from -40°C to +85°C or higher . Common Applications
You will most frequently find this relay in the fuse boxes of older and mid-2000s Japanese vehicles:
Honda Fleet: Widely used in the Honda Civic, Accord, and Odyssey . Coil Data (Input)
Motorcycles: Found in models like the Honda Shadow and VFR800 .
Functions: Controls the flashing frequency of incandescent bulbs. It is specifically tuned for a certain electrical load (usually around 21W per bulb); using LED bulbs without resistors can lead to "hyper-flashing" . Troubleshooting: Signs of Failure
If your indicators are acting up, the G8B-201-01 is a prime suspect. Watch for these symptoms:
Rapid Blinking (Hyper-flash): Usually indicates a blown bulb, but can signal a failing relay if bulbs are fine .
No Blinking: Signals may stay "solid" (lit but not flashing) or not turn on at all .
No "Clicking" Sound: The physical relay inside the housing isn't engaging . Replacement and Repair Honda Omron Turn Signal Flasher Relay G8b-201-01 - eBay
Turn Signals for Honda Civic. * Turn Signals for Honda Accord. * Turn Signals for Honda Odyssey. Turn Signals for Honda Fit.
Given the part number format and Omron’s typical naming conventions, this is a high-current PCB-mounted SPDT (Single Pole Double Throw) relay designed primarily for automotive and transportation applications (12V DC systems).
In the world of automotive electronics and industrial control systems, reliability is not a luxury—it is a necessity. When dealing with high-current loads, such as headlights, cooling fans, fuel pumps, or anti-lock braking systems (ABS), a standard low-power relay simply won’t suffice. This is where the Omron G8B-201-01 enters the spotlight.
For engineers, hobbyists, and automotive technicians, the Omron G8B-201-01 is a trusted name. It represents a specific class of electromechanical relay designed to handle heavy-duty switching tasks without succumbing to heat, vibration, or voltage spikes. This article provides a comprehensive deep dive into the specifications, applications, pin configuration, and common replacements for the Omron G8B-201-01.