BrakeMaster„¢ connects directly to the motorhome's air or hydraulic braking system for rock-solid, reliable braking. Brake line pressure in the motorhome controls the brakes in the towed vehicle. Because it connects directly to what powers your motorhome's brakes, BrakeMaster„¢ automatically is a truly proportional, truly synchronized braking system. So, however you brake the motorhome, BrakeMaster„¢ automatically applies the same pressure every time. It connects and disconnects from the towed vehicle in under a minute, without any tools, adjustments or settings. Special order item, call for availability.