Everything you need to use Air Force One in a second towed vehicle. The SMI 6271 Air Force One 2nd Car Kit along with the SMI Air Force One are the only brake systems that use your motorhome's air brakes to energize the towed vehicle's power brakes through a process that does not require a vacuum pump. The Air Force One braking system has no moving parts to wear out and features a breakaway system that seals the coach's air supply in the event of a coach and vehicle separation. Easy to see Coach Notification lets you know when the system is operating. Mfr. 5 year limited warranty. Made in USA. Towed vehicle brakes are in direct proportion with the coach Operating unit mounts under the hood of the towed vehicle, completely out of sight Once installed, the system is always ready for towing with no set up or take down | Demco Air Force One 2nd Car Kit Made in USA