Lumitronics Model 19 Series Thin Line Sealed LED Marker Light - Red. Clear Light For When You're On The Road. DURABILITY: Sonically sealed, waterproof USAGE: Accepts standard 1- or 2-wire plugs DESIGN: Single wire design grounds through mounting hardware FEATURES: Two-wire design includes both lead and ground wire for mounting to all surfaces SPECIFICATIONS: WT/DIMS: .066 lbs. / 3.938 x 1.25 x 1.25