I came across these HO scale LED street-lamps on eBay recently. I chanced my arm and bought 20 for
Far too much ornament for my tastes.
But I have seen a few other designs which are more functional.
My idea is to use them for a Gallic flavour layout, somewhere where a touch of turn of 20th century 'exub
The Light tramway society or whatever they are called sell a die cast Lisbon tram which can be converted to run on a kato tram chassis.Can't help you with catenary or posts but the importers of TT equipment may be able to help.