Does anybody know where I can get some mechanical cable? That's the best way I know how to describe it. It's like what you would see on a bicycle. A cable that runs through a stiff plastic sleeve. What I'm wanting to do, is make myself a lock for my front door. I'm going to cut a hole in the front of the bus just forward of the door. I'm going to install a lockable door over the hole. I'll be able to unlock the small door and inside, I'll have a handle attached to the cable which I can pull and unlatch my door. It should be pretty simple to set up and not many people would notice it or realize what it's for. Anyways, I don't know where to start looking for a cable like that. I'd like for the hard sleeve to have a couple nuts on each end so I could fasten it down that way. Any ideas?