1rickw wrote:
If it wasn't illegal in CA to tow with without a brake system, I would not use one. I have a Honda Fit that weighs 2400 lbs. I keep the brake system turned on low. The only time it goes on is if I have to stop a little harder, but the system locks up my Honda's brakes. Very annoying. I have a 26 foot Class C on a E-450.
From what I have read of CA law, if you can stop your rig within 45 feet from 20 MPH on a clean, dry, level, hard surface without aux braking, you are legal.
Look up the CA Braking Performance Law.