Review on Cateck 1-2 Socket Cigarette Lighter Splitter & Dual USB Car Charger Adapter with Voltage LED Display - Compatible with iPhone, Samsung, iPad, Tablets, GPS, 12-24V Voltage, Suitable for Multiple Car Models by Loren Schmidt

the first block that came was defective. Only one side of the splitter worked. returned to Revain and reordered. The second device came and worked perfectly. I used it for the FF lights on the windshield. I like that the switch displays a red LED when powered. I like being able to turn to one side when stopping on stage so I don't have too much light blinding oncoming traffic. Sometimes I turn off the driver's side when driving in the rain so I'm not blinded by the left side light, then turn it back on when I stop.