Recently I purchased a blue Ox supplimrntal break system. Unit was easy to install and adjust for my jeep Wrangler tow vehicle. I have used it for about a month now and I am very pleased with it. It takes about 2 minutes to place in jeep before towing and is even easier to disconnect at end of tow. Only issue I have had is that the remote controller occasionally loses radio signal communication with main unit. Typically it is just for a brief time and doesn't impact the operation of the main unit. Autoplicity. Had the item at a very competitive price. I received the unit in 3 days! Definitely would purchase from them again.