This white round clearance lamp provides side or rear position lighting on tractors and other agricultural machinery. It is a surface-mount lamp with a white lens, designed to mark the vehicle's outer dimensions for road travel. The lamp operates on a 12-24 volt electrical system and is secured to the mounting surface using the threaded studs at the specified hole spacing. A cracked lens or failed internal bulb allows moisture ingress, which causes intermittent or complete loss of the light function. When replacing, verify the polarity matches the vehicle's wiring and seal the mounting base against the body panel to prevent water entry.