This right marker lamp assembly is installed inside the sun visor of FAW J7 heavy truck cab. It serves as the roof outline marker light to display vehicle width for safety warning during night driving. The lamp shell adopts high-strength anti-aging material with reliable waterproof and dustproof performance, adapting to long-haul heavy-load and all-weather working conditions. Precision mold manufacturing ensures perfect matching with original mounting holes and wiring connectors. Each lamp undergoes lighting performance, waterproof and aging tests before delivery. It is an essential replacement spare part for FAW J7 cab roof lighting maintenance.