Review on 🚗 Nilight - 90116C 2 Gang Rocker Switch Panel with 4.8 Amp Dual USB Charger Voltmeter, Waterproof 12V-24V DC Rocker Switch for Cars, Trucks, Boats, RVs - Includes Night Glow Stickers by Jose Ortega

I've been watching a video that seems to require that ALL grounds be combined with a single ground wire hanging from the back of the switch, and then each positive wire is connected to the switch's corresponding positive load terminal. At first everything worked fine, although I only had load on the left switch. The gauge showed 12.7 volts, which was correct. I had 4 25 amp LED lights, so popular in vans and trailers, as a load. After 10 minutes the light went out and the blue light on the counter stopped working. I switched the load to the switch on the right (it still showed the blue status light) and turned on that switch and it worked.