Shop Nilight Rocker Switch Style USB Charger Green LED Voltmeter Quick Charge 12V PD Type C and USB QC 3.0 Car Charger Replacement with Inline Fuse for Switch Panel on Boats RV Truck Car in high quality, support 2 Years Warranty. It can fit in common rocker switches, it fits right in slots where switches are supposed to go. It was a direct replacement for the extra rectangle hole for an accessory in the dash. Great for boats, side by side, Yachts, ATVs, speed boats, RVs, Trucks, and other vehicles. It’s simple to install.