1. It's , waterproof and shockproof. 2. It is easy to install.Bright lights with feature,great for replacing your old LED tail lights or side. 3. Suitable for including Truck, Trailer, Semi Truck, Van, Lorry, RV, Bus, and Pickup, etc.<br><br>Installation Precautions: Black cathode Yellow driving Red brake Type:LED Brake Tail Signal Light Voltage: 12-24V DC Light Color: colorful Note: Installation guide not included, we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. Due to different production batches, there are some differences between the physical objects and the pictures, which not affect the normal use. Color:As Shown Material:ABS<br><br>Package Contents: 1 * Truck Brake Light<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.