On this Polar express Berk I bought the other day,
I found this number on the bottom of the engine frame under the cab area,
and I found the number circled in red on the left on the engine PCB, and the number on the right on the remote PCB
and would like to know if anyone can tell me what they are, what purpose they serve, or anything about them? I'm especially curious regarding the numbers circled in red, do they need to match?
I'm hoping somebody has been down this road before me, and is willing to share - thanks!
George