Could be the cable I guess. Do I need to disconnect it or something, the emergency brake in the cab is not on. I down loaded the manual the other day - what a piece of $%$@ the pictures are not very good and the explanations are worse ... very Old school. Anyway I will check that out, does it do any harm to disconnect it from the shoe (like it was when I got it) or will this cause problems? would like to have emergency brakes though!