Conversion kits for HID and LED, compatible with 24V, with anti-flicker function. ★ LED CANBUS anti-flicker is a product mainly designed to solve problems that occur when LED bulbs are installed in LED headlights and fog lamps of vehicles. The main functions and purposes are as follows: Preventing flickering: The vehicle's CAN bus (Controller Area Network Bus) system monitors the power consumption of conventional halogen bulbs. Since LED bulbs consume less power, the vehicle's system may misidentify them as burnt out, causing the LED lights to blink or turn off completely. This decoder suppresses flickering by adjusting power consumption. Eliminating warning messages: Some vehicles display a "bulb out warning light" or error message on the dashboard when a bulb is recognized as burnt out. This decoder cancels this warning message. Noise reduction: LED lights may interfere with radios and audio, causing noise, but this decoder can also suppress radio interference. ★ Thank you for viewing. ★ The blue label parts are "positive/negative conversion converters" used for electrical components in cars. This converter is used to convert the 24V power supply to the power supply of the negative charge control circuit used in HID vehicles, etc. It is often used to convert to positive control when installing HID or LED headlights, etc., on vehicles with negative control. The main uses and features are as follows: Input voltage: Compatible with 24V. Applications: Functions as a constant control circuit or negative charge control circuit to convert the use of HID vehicles. Functions: Used as a multi-relay unit or adapter to convert negative control such as H4 Hi/Lo to positive control. Installation: Easy to install by simply connecting to the positive and negative terminals of the battery. ★ These were purchased for a truck but were not used, so they have been stored. Although they are new, they are items that have been stored for a long time. ★ Please understand that these are items stored by an individual before purchasing.