Review on 8-Foot 7-Way Trailer Extension Cord - Heavy Duty & Weatherproof - Ideal for RV Trailer, Caravan, 5th Wheel to Truck or Van - 7 Pin Connector Plug by Lawrence Reuter

This extension is very cheap and poorly made. Didn't work right out of the box. The simple connection part worked but the power supply didn't work. After spending a lot of time tracing the wiring, I concluded that it was properly connected. After disassembling the connector end of the cable, I found that the contacts were so cheap and flimsy that they collapsed when connected and didn't expand when disconnected. The power cord was damaged and had no contact. I had to change the whole head to make it work. DO NOT BUY THIS PRODUCT.