X 2 on the m & g air brake connection. I have used the m& g system for nine years, no problems whatsoever. Simple hookup, just running an air line connection between coach and toad. In an emergency stop, seen skid marks from the wrangler. I have the m & g breakaway kit also.
After nine years use, I am glad I did use the m & g, and if I ever get another coach or towed, it will have the m & g system on them again.