Check the listing for details. Custer Products STR61W Low Profile 6 LED White Strobe Light 19 Flash Patterns. Condition: New. Listed at 35.99 USD. Custer LED Low Profile Strobes with 19 Flash Patterns Item Specifics:Super low profile for discreet mountingCan be synchronized with other lights19 Flash Patterns!WhiteWeatherproof with vibration resistant design6 CREE Diodes4.5" L x 1.25" H x 1/2" DPart # STR61WWhen Wiring Independent Lights:Red is 12V (+), wire to your switch to turn lights onBlack is ground (-)Yellow is trigger wire, touch to 12v + to change patternsWhen Wiring 2 or More Lights to Synchronize:All red wires together 12v (+) to your switch to turn lights onAll black wires together to ground (-)All green wires must be tied togetherAll yellow wires must be tied together and then touch to 12v + to change patternsWhen Wiring 2 or More Lights to "Wig-Wag" asynchronization:Follow instructions for synchronizing and then attach ONE green wire to power (hot wire) and lights will wig-wag back and forth