The rear mounted magnetic switch turns one way to active the HID light and the other way to activate the rear mounted LED light
' Product Overview ' Buy American Compliant The Larson Electronics LEDLB-4ET-M LED Light Bar offers high light output and extreme durability combined with a versatile magnetic trunnion mounting system that provides convenience and 270 degrees of adjustability
500 Multiple LED Banks for Heat Dispersion Luminous Efficiency: 130 lm/w 130 Lumens Per Watt Efficiency Beam Configurations: 10° Spot
Electric Optional IP67 Waterproof LED Fixtures Cable: 3/16 Aircraft Grade Galvanized Steel Cable Mounting: 1/4" thick
RGB and Gesture Sensor - APDS-9960 $100 - $250 The rear mounted magnetic switchThis is the SparkFun RGB and Gesture Sensor, a small breakout board with a built in APDS 9960 sensor that offers ambient light and color measuring, proximity detection, and touchless gesture sensing. With this RGB and Gesture Sensor you will be able to control a computer, microcontroller, robot, and more with a simple swipe of your hand! This is, in fact, the same sensor that the Samsung Galaxy S5 uses and is probably one of the best gesture sensors