4" Amber High Power 3 LED Strobe Safety Warning Flasher Light / Chrome Base4" Amber High Power 3 LED Strobe Light Chrome Base. Extremely Bright LED Strobe Light with 11 Different Flash Patterns and the ability to synchronize for multiple light installations. Approximate Dimensions are 3 7 8" Long by 1 5 8" Wide by 1 1 2" High and the mounting holes are 3 1 4" apart. Surface Mount Light with a rubber gasket for for a greater seal with the mounting surface. Wiring Instructions on packaging. Black Wire Ground, Red Wire Hot Lead