"Here in Canada, we experience a lot of corrosion on our horse trailer plugs from salted roads, snow and dirt. It was common place for us to replace our truck and trailer connectors every spring to ensure working lights and brakes. Since installing EZ Connector 5 years ago on our Sooner, trailering is trouble-free. The connector is as good as the day we installed it, no corrosion, and guaranteed working lights and brakes. Yes, EZ Connectors aren't cheap but they pay for themselves with year after year of trouble free performance. We've just purchased another horse trailer, this one with living quarters and the first thing we did was change over the plug to an EZ Connector. If you want peace of mind and the confidence that your trailer connection is working, EZ Connector is the only answer."