Trolley accs

Hi all,
Have decided as a mini project for this winter to build an authenic wartime/50’s trolley acc that would have been typicaly at many RAF stations.

I have a basic idea of there size/dimensions but i was wondering if there are any plans/drawing for the unit its self and the associated electrics?

I have access to a few if there isnt so i could easily make some up myself if there arent.

I feel the hardest thing to obtain would be the main wheels, does anyone have a solution for this?

Thoughts? Ideas? Solutions?

All the best
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