Thanks for the reply Jon seems like you may be the person to answer my question, I will explain abit more. Were planning on towing the Hybrid (Milan) with our motorhome when we travel and I need a supplimental braking on the towed vehicle. The system I'm using works with power brakes (Deactivated, no vaccum). This system will work without power brakes (or what they call dead brakes,I think) but I will need to get a pressure reducer, to reduce the air pressure that activates the brake pedal, otherwise to much pressure is applied to the brake pedal. Not sure what really will happen but maybe brake lockup. Thats pretty much why I need to know what kind of system the Ford Hybrids have or how they work. Thank for the Replies LarryG