We have the ready brute elite tow bar. It works nicely and eliminates a lot of headache for having a supplemental braking system. It has a piston set for approximately 250 lbs of force to make the surge brake activate. It requires as small hole in the firewall for the cable to run thru and then it attaches to the brake pedal with a small clamp. It will not activate going down hill or normal braking but will apply if you brake hard. Just make sure you have a drop down or riser extension for your motor home receiver to keep the system close to level. I have a four inch drop on mine. The acceptable range is 2 to 3 inches either way but I preferred level.