Thanks for the responses.
To be sure, I will probably pack one of my HO locomotives with confirmed polarity down to the kids and compare to determine which chassis is running correct.  I suspect the trolley chassis is correct and the locomotive is wired for international/European G direction.  My father in law ordered the 4-6-0 from Hammacher Schlemmeror who buy large lots of goods domestically and internationally to maximize their profit share, so this may have come from further afield.

The wood is 3/8" thick pine, so it is sturdy, but not everly heavy, and actually lighter than the mechanism, which is pretty substantial.  I see this chassis is no longer available from the part store, so there won't be any writing this up into a how to article since no one would be able to get the part needed.

Would love to post a couple pics, but not sure if that will work here.  It just says upload folder full.  The picture is only 128kb, what's the point, this website is looking pretty dated and throwback.  Images that small harken back to the early days of the internet, if I can't upload a 128kb photo what's the point anymore.

I purchased one of the "streetcar motor blocks with mudguards" to build into a durable wood trolley for my nephews who already have one of the 4-6-0 north pole sets.  When we put the trolley chassis on the track with the 4-6-0 they both ran towards each other rather than in the same direction. 

So I know one of these is wired reverse of standard NMRA practice. 

I read the schematics for the 4-6-0 set and it indicated there should be a polarity reversing switch behind the smokebox door, but when I opened and looked there I did not find the switch as the photo in the schematic indicated.

I would like to get both of these updated to the correct standard so they can work with any equipment we might add.  I am not in the same town as these trains otherwise I would just run jumpers from my HO track and compare them to my models to determine which one is wired reverse.

Please recommend which one might be wired backwards, I believe it is the 4-6-0, but it does not have a polarity switch to flip, and I don't want to take it apart and reverse the wires if it turns out to be the trolley motor that is wired backwards.

Just checking in after a few years off this forum, the 4-4-0 is still a serious modeling quandary of mine and I am still very much looking forward to this model.
The classic 4-4-0 balloon stack locomotives were probably what attracted me to railroading as a kid, and years later they nothing revives that early spirit quite like those early engines.  With all of the current appeal of modern high tech railroads, the early 4-4-0s have that broad and universal primordial grip that is tough to deny.
I look forward to seeing how this model will come out.
I plan on modifying a couple of these to mid 1860s fashion and really taking advantage of the small motor hidden away.