About the product: A rectifier is a device that converts alternating current into direct current, which can be used to power devices and detect radio signals. A rectifier is a rectifier device, in short, it is a device that converts alternating current into direct current. It can also provide charging voltage for the battery, so it also acts as a charger at the same time. Description: 1. Manufactured according to OE quality and high standards 2. High corrosion resistance and long service life 3. Perfect after-sales warranty and distribution advantages 4. One year warranty, 30 days free return 5. Direct replacement, easy to install. 6. 100% new brand condition. Specifications: Vehicle Placement: Front Package Includes: 1 x Regulator Made of Rubber, Plastic, Metal Material Type: Voltage Regulator Rectifier Surface Finish: Finished Compatibility: For HONDA TRX350 Fourtrax 350 4×4 1986-1987 For HONDA TRX350D FOREMAN 350 4×4 1987-1989 For HONDA ATC250ES BIG RED/ ATC250SX 1985-1987 Package Includes: 1 x Voltage Regulator Rectifier Installation Steps: 1. First, connect the end with black heat shrink tube to the negative electrode of the battery. 2. Then connect the end with red heat shrink tube to the positive electrode of the battery. 3. Be careful not to touch the positive and negative ends of the rectifier at the same time during the installation process. 4. Then stick the rectifier with plastic tie or 3M double-sided tape (other double-sided tapes are difficult to guarantee the quality) on one side of the battery in a ventilated place, and do not install it near the engine side, so as to facilitate ventilation and heat dissipation. Product function: 1. Reduce the phenomenon of idle shaking and make it more stable. 2. Improve the power, effectively improve the problems of car friction, gear braking, lifting and weak acceleration. 3. Stabilize the voltage, reduce the interference noise, increase the service life and performance of electrical appliances, and improve the sound quality of the car audio system. 4. Protect the battery and the original car electrical circuit system, reduce its load and prolong its service life. How to test the quality of the car rectifier: To test the quality of the car rectifier, it depends on its durability and whether it can really improve the throttle response. Such as the internal circuit system and shell thermal insulation, waterproof, anti-oxidation design (the use of thermal insulation and waterproof shell, imported large-capacity long-life capacitors, epoxy resin insulated circuit board, plastic-sheathed wires, high-strength/conductive solder, etc.), this is the biggest factor that affects the durability of the work. Therefore, I strongly recommend our products Note: Before purchasing, please make sure you have your own model. If you have any questions, please feel free to contact me. If there is any problem, please contact us for the first time. Professional installation is more recommended.