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.