Compatibility: For 1988 - 2000 Chevy/GMC 2500/3500/4500/5500/6500 Heavy Duty trucks WITH factory stock cab marker For Chevy Kodiak and For GMC Topkick medium duty trucks WITH factory stock cab marker. Fits on most of 4x4 / Off-Road / SUV / Crossover / For Jeep / RV / Pickup truck vehicle. Owners can change the Lenses and Bulbs while retaining the factory black bases & factory installed wiring.
Application: Cab Marker Light, Roof Running Light
Note: Professional installation is highly recommended! do not drill until all positioning is done. Drilling is unnecessary if your vehicle comes with stock roof running lights. Positioning & drilling is needed when installed on other vehicles. You may also need silicone gel or other material to the hole.(The Main picture is for your reference only,please subject to the real product effects,thank you!)