Marinco Shore Power Straight Adapters - 30A 125V Marine Electrical Connector for Boats & RVs - Waterproof & Durable Power Adapter for Dock, Marina & Camping Use

So I have a 5th wheel I bought new. My first 50amp trailer. Bought a 50amp dongle adapter from the dealer. Only half of my electrical panel worked at home while plugged in. After getting an electrician and contacting someone who writes a blog for the RV industry, found out this is one of the few adapters with two electrical legs inside for both sides of the distribution panel the will work off of my home 20amp plug. Works will for running the lights and charging the battery. Wouldn't try and run the AC with it. Dongle bought at dealer only had one electrical leg, thus only half of the panel worked! Took an army to figure that out