A feller buncher is a forestry machine that cuts standing trees and groups them into bunches for extraction. It uses a cutting head mounted on a wheeled or tracked carrier. Work lights support visibility around the cutting head, boom, travel path, and surrounding trees. The machine must operate among branches, uneven ground, vibration, dust, moisture, and frequent changes in boom position. Lighting should help the operator identify stems, control the cutting head, monitor the felled bunch, and see travel hazards. Several patterns and mounting positions may be needed to maintain coverage as the boom and head move.