Rigging Train Control Arms.

I am having trouble rigging these control arms of this train I am working on. I can’t seems to get the bones to properly be applied to the mesh. The objects are in the same object but they are not connected by verts at all. perhaps i am going about this in the wrong way but any help would be greatly appreciated. Ah yes, i have also included an example mesh of the same armature and the same rig.Train_Example.blend (700 KB)