What all do I need to use it's code on my N810?

Found one N800 Navigation Kit for massively cheap, but inside there's no manual. The label on the box has a serial and some other 7 number code... but for the life of me I can't find any other license/key. I've attempted to contact Wayfinder, but I'm finding myself impatient and wanting to know if I should purchase this since it'll be less than half what they're charging on the site for the license.

Thanks in advance. Your answer will definitely determine my purchase.

It absolutely will work with the n810. i bought it for my n810 and all i had to do was put the code in and it works great. i highly recommend it.

In the Wayfinder FAQ's, it states that the code is on the back page of the manual... or on the about within the program.

There's no manual within the box - it seems to have been lost in the mix. And on the box, there's nothing of significance other than the serial; and that's not it (I think).

And there's no mention of code on that label, and without the manual I might be buying a "dud"... no use to me and I can't take it back since all sales are final.