【Universal Dashcam Power Adapter】This dash cam power adapter is suitable for all models, it can be used to connect the auto-dimming rearview mirror/reading lights/lane assist/rain sensor and other locations, meet the needs of different brands of models, no need to worry about compatibility issues. | 【Clean Installation】This dashcam power adapter DC Dual USB Buck Module is easy to install and plug and play. （note: that this universal adapter cord does not provide continuous power and will only work when the vehicle is started.） | 【Dual USB Buck Module】Equipped with 2 USB buck modules, each outputs 5V2A max. Please note: the current of a single device is best not to exceed 2A (the current of the dashcam/GPS is about 0.6A), you can unplug one for spare if you only need to use a single USB. | 【Including 3 USB Cables】We provide micro/mini/type-c USB charging cables to power GPS, e-dogs, phone charging stations with wireless charging, and more. | 【Installation Method】Usually the red wire is "+" and the black wire is "-", insert our universal adapter wire into the corresponding positive and negative gaps on the back of the car connector, make sure that it is in contact with the metal part inside the connector, start the vehicle, if the voltmeter shows about 12V, it means that it is connected correctly, and then use the tape to fix it securely, and then finally connect the USB bucking module, the USB indicator light is on behalf of the can work normally. (A brief misconnection will not damage the buck module)