Microprocessor relays are crucial components in modern automotive systems, managing a wide array of functions from engine control to lighting. Selecting the correct replacement ensures optimal vehicle performance, safety, and longevity. Understanding the key features and compatibility is essential for a successful repair or upgrade.
- 🏍️ RELAY FOR LED AND HALOGEN OR BULB INDICATORS: Designed for Honda, KTM, Kawasaki, Husqvarna, Suzuki, Triumph, Yamaha & other motorcycles with a 2/3-pin connector ensuring a perfect fit for the bikes listed in the chart below.
- 🛠️ VERSATILE USE WITH LEDS AND HALOGENS: Suitable for any mix of LED and halogen indicators, this [12V DC 0.1-150W] electronic microprocessor relay maintains a consistent blink rate.
- 🏍️ EASY PLUG-AND-PLAY INSTALLATION: No need for cutting or soldering; simply plug into your OEM connector for a hassle-free setup. Check our model compatibility table for ease of use.
- 🛠️ HYPERFLASH SOLUTION: Eliminate the annoyance of fast flashing or hyperflash when retrofitting LED indicators, offering a reliable, efficient alternative to resistors.
- 🏍️ DURABLE AND EFFICIENT: With an operating temperature range of -40ºC to +80ºC and a max power of 120W, our relay ensures a steady 85 flashes per minute, even in extreme conditions.
- Plug-and-play style
- Compact 12-volt 4-prong relay
- Stay within its capabilities. Try to stay 10 to 15% below what the rate is for
- Works on lawnmowers and lots of cars
- OE/OEM Part Number: B5B4-18-811.
- Fitment: Fit for Mazda 323 Series, for Mazda Protege 626, for Premacy MX 5 Demio Miata.
- Simple replacement and easy to install, convenient to use.
- It is match for the vehicle, one of replacements for the old/broken one.
- Package Included: 1 x Relay.
- Mobile Audio Relay and Battery Isolator. Great for isolating a second batter making it dedicated to the stereo system
- Does not create a voltage drop to the second battery like conventional isolators
- 500 Amps at 12V Continuous Power Handling. 700 Amps Surge Power Handling
- Switching Power: 10 - 16 VDC
- Draws Less Than 1 Amp When On
- The XSBi series of isolators primarily monitors the main starter battery voltage. Once the starter battery voltage reaches 13.2 volts, the solenoid automatically connects the auxiliary battery to the charging system.
- These smart battery Isolators also help lengthen the life of your starter battery. When two-vehicle batteries are wired in parallel they have a tendency to charge and drain one another.
- 80 Amps at 12V Continuous Power Handling. 150 Amps Surge Power Handling
- Switching Power: 10 - 16 VDC. Draws Less Than 1 Amp When On
- Dimensions: 2-7/8"W x 1-3/8"D x 3"H
- [BOSCH EXPERTISE] - Bosch has been producing relays for vehicles and other applications for more than 40 years - this vast development experience ensures continuous advancement in design features to deliver optimum performance
- [COMPACT SWITCHING] - Bosch Mini Change Over Relays feature a compact design and are used in a wide range of vehicles to perform switching operations
- [PREMIUM PERFORMANCE] - Bosch relays incorporate only premium quality materials for reliable, long-term performance and a 150,000 switching cycle capability
- [ADVANCED ENGINEERING] - Engineered with high corrosion resistance to ensure long term reliability in harsh environments and conditions
- 5 pins, 12V DC, 30/20A; Diode coil connection; Integral mounting bracket; Sold individually
- Reliable and durable automotive power relay with a nominal coil voltage of 24 VDC.
- Features 1 form C contact form for versatile applications.
- Contact material made of AgSnO alloy for superior conductivity and long-lasting performance.
- Rated current of 20A ensures efficient power transmission.
- Equipped with a quick connect coil termination for easy installation.
- Fitment: Compatible with Mazda 323 Series, MX 5 Demio Miata 1996-2005, Protege 626 1997-2003
- Part Number: B5B4-18-811, B5B418811
- Package Included: 1pc Main Relay
- Save Time: Simple installation allows you to do car repair and maintenance at home, no need to go to professional repair store, save your time.
- Strict Quality Control: We implement strict quality control standards before the products reach you. Each product is inspected and tested several times before shipment.
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Last update on 2026-07-19 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Automotive Replacement Microprocessor Relays
Understanding Microprocessor Relay Types
Automotive microprocessor relays, often referred to as electronic relays or solid-state relays, differ from traditional electromechanical relays. They use semiconductor technology to switch electrical circuits, offering faster switching speeds, longer lifespans, and greater precision. These relays can be designed for specific functions, such as controlling headlights, fuel pumps, or engine control units (ECUs). It's vital to identify the original relay's function and specifications before purchasing a replacement.
Key Specifications to Consider
When selecting a replacement, several specifications are paramount. The voltage and current ratings must match or exceed the original component's requirements to prevent overheating or failure. Pay close attention to the switching type (e.g., normally open, normally closed, or changeover) and the control signal voltage. Compatibility with your vehicle's electrical system, including any specific diagnostic codes or protocols, is also crucial. Check the part number against your vehicle's service manual for guaranteed compatibility.
Installation and Compatibility Checks
While microprocessor relays are generally plug-and-play, some may require specific programming or adaptation to your vehicle's ECU. Always consult your vehicle's service manual or a qualified mechanic for installation guidance. Ensure the physical dimensions and connector type of the new relay match the original to ensure a secure fit. Incorrect installation can lead to system malfunctions or damage to other electronic components.
