Hopkins Manufacturing Corporation makes your towing experience simpler and more rewarding through innovation and value. Hopkins offers a variety of towing solutions including vehicle wiring kits, adapters, vehicle and trailer connectors, breakaway systems and much more. Today, more than 40 percentage of retail category sales are generated from Hopkins innovations. The Hopkins Quick Lock Diode saves time over traditional diode blocks. These 5 Amp heavy duty diodes feature enhanced weather proofing, and require no crimping or stripping wire. Grease packet included. Other diode blocks are difficult and time consuming to install. Eliminate the hassle with the Quick-Lock Diode.