Wheelers who tow their rigs will find Custer's trailer lights especially useful. They feature heavy-duty magnets that are said to have 70 pounds of holding power per side. A non-scratch vinyl cover protects the lights, and a heavy-duty cord runs 30 feet from plug to lights with 7 feet between each light, just in case you're running a wide load. The trailer lights have a 4-round standard plug for easy hook-up, and the lenses are mounted in a rubber housing.