My braking system is now installed and working great! The system senses deceleration + brake lights and applies the brakes to the car using a vacuum cylinder attached to the brake pedal. If the RV brakes quicker, the brakes in the car go on stronger as well. This is a safety feature because without this system the RV would take longer to stop. All of these modifications were done to have as little impact on the existing car systems as possible so as not to void the warranty. If there is any interest, I would be happy to provide more detail.