Part 1
Getting ready to add a Lionel 103 electronic e-unit to my Lionel 2030. Well, what do you know, there are 3 mounting slots for this 2-3/8” long pcb, right next to the rear truck putting it just where it needs to be – a dab of hot melt or silicone to hold things in place, and I’ll be all set! But wait, there’s more! There are three more pcb type slots on the opposite side, directly across from the e-unit. Clearly these slots hold a slightly longer board, 3.0” in length. What are they for? (large white arrows)
Part 2
Looking at the front truck I see 3 plastic tabs situated vertically on the frame, not far from the guy driving the train (also 3 white arrows.) These tabs are the kind where you pry them back a bit to allow an object to snap into place. But as you can see, these three are arranged in a triangular fashion, suggesting something round might go here? But what????
Any thoughts would be appreciated! This isn't slowing me down at all, but now I am curious!