MDbasser; Take some quarter inch rubber gas line and cut into one inch pieces. then slit the pieces and slip over the brake line everywhere there is a half a chain link support along the inside of the trailer channel. Put a dab of silicone sealer on each piece to keep it from sliding around. Dont forget to do the rear axle. This will eliminate a lot of noise. You dont really pick up the rattling if your towing with a pick-up, but if your towing with a van with the rear windows open….WOW. Plus its never a bad idea to keep your brake lines tight and secure…….”Uncle” Mike