Operates 9-16 Volt DC Systems. 6 LEDs total. Rated at 100,000 hours of service life. Shock and vibration proof. ABS housing. No corrosion. Sealed polycarbonate marker lights. Impact resistant. Energy draw 150 mA. Interchangeability with most manufacturers. Required for trailers, campers and trucks OVER 80" in overall width. 2 wire.