Very interesting. Not a lot of room inside the trolley for a module, but perhaps there's something relatively small that could be used.
On another trolley related topic, the Lionel instructions (71-8404-250) Rev. A for my Trolley #8419 say the following re: armature bearing lubrication: "IMPORTANT! Replace set screw and tighten down snugly, then back off 1/2 turn".
If I do what it says, the trolley won't run at all: I have to back off about 3-4 turns!
Any idea what's going on?
