I took an end of one of the coaches yesterday, as part of one side had sprung out. I managed to spring it back in without any damage, but if you have any info about getting inside these coaches to put in passengers, then I'd be grateful for the info.
As for getting 2 sets running together, the dummy couplings would have to be changed for either hook and loops or maybe the coupling used to connect all the vehicles together....[/QUOTE
To get inside, take off the coach ends then slide the roof off sideways - it should slide off quite easily. Doing this will then reveal the inner roof with electrical connections for lights and this is held on by a dozen or so screws. Unscrew these, remove the inner roof and this will give you access to the coach interior.