Today’s on-highway trucks have become the “home away from home” for many thousands of professional drivers. The fact that many of these vehicles rack up hundreds and thousands of miles per year demands that all of the door hardware – cab, sleepers, compartments, hoods and access doors – perform as well as the men and women who operate these vehicles. Added security and convenience can be obtained by utilizing a heavy duty ignition switch with KeyOne Plus. KeyOne Plus is TriMark's patented modular locking system providing “One Key — One Vehicle” convenience.