3A USB car charger + Output Ports for car 12V-24V USB car charger3A

Install the method：

1. Tear the protection membrane on the twin adhesive at theUSB car charger and to clean with the clean cloth and alcohol before sticking, it will be firm to pasted. Such as figures 1. 

2. Insert plug in cigarette socket of car and look over that LED light on the products will be on, whether the function is normal and confirms the car key and rotates on before testing.