Unless you get lucky and find someone that has one of these, and can just tell you, you will need a service manual. Here's a user manual:
http://www.manualnguide.com/manual-get/3441/
If you could, you might just run it by a mower repair shop and see if they could tell you where the wires go- that would be the easiest way. Otherwise you will have to get a repair manual from the manufacturer, and they usually charge for those.
Sometimes if you look closely, you can figure out the cable connections, but the wires are the problem. If the switch just had two wires on it, they could go either way, the on/off function would just be reversed.
Wish I had more specific information for you, but good luck, thanks for using FixYa, and hope this helps.