But it wasn't hooked up to the bus so what good does that do? You need to have the airline hooked up to the bus and toad to make sure everything is going to work. You can test it while sitting still. You do not have to be moving, but do have to be hooked up. Have someone push the brake pedal in the bus while you watch the pedal in the toad. You need to try that to see what happens. Nothing will work unhooked from the bus!!!!!!!!!!!!!!!