Its not on the bus itself. Only the quick connect air fittings are on the buses. The instructor's trolley brake lever stays with the instructor. They clamp it to the first curb side stanchion. The quick connect fittings are usually mounted in a small locked box under the first bench seat on the the curb side of an RTS. In the NGs, they are usually mounted to the drivers side of the firebox, behind the drivers partition door.
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