E-Z Track Part 4475/76 & rail joiners

[Law Dawg 86]

Back Man,In reading the instructions for the above crossovers, on a very small paper along with the directions is a note on polarity for the frogs, and a diagram showing a pair of needle nose pliers lifting some wires. I see the two sets of red & black wires, but what do you do with them? There are no instructions.
Next,  I am having problems with joining track using E-Z track. There will be places where one rail will be slightly higher for 2-3 lengths, then they will be smooth. What could be the cause, and what would be the cure? Thanks

[full maxx]

I don't think you need to do anything to the frogs, I have 2 crossovers and they work fine dc and dcc and about the height of the rails...make sure you are getting both sides in the joiners, ez track can be a little difficult till you get use to it