Chevrolet 1533X2 30-cwt trucks

[Charlie Down]

Hi, this is my first venture into MLU, just joined today as advised by Hanno. I am currently trying to get a set of drawings of the floor and cab area including the dashboard completed for the LRDG Chevrolet 1533X2 truck on the basis that we don't know much specific detail about it. On the spec above it stated that the trucks would have a PTO air pump, but have never seen one being used. I have so far got details of the actual pump and its location, I know what the airline looks like and the connector, but have no idea where the airline runs to from the pump and whether it comes out in the cab or somewhere else. The cab makes sense as it's central to all 4 wheels, but there is no photo evidence of it's location on the LRDG trucks. I know the pump and airline were a standard accessory, was its fitting and location also standard?