need help wiring key switch to my 1993 simplicity regent 12?

A few weeks ago, someone made an attempt to hot-wire my sit-down lawn mower, fortunately for me they weren't successful. I order a new key-ignitionswitch for it, only problem is I'm not sure which wires go to which terminals on the switch. The wires that are exposed are colored:
2 black wires (i'm assuming they go to ground)
1 solid blue wire
1 solid red wire
2 wires red/black and red/yellow
2 wires red/blue and red/white
If any one has any background working simplicity lawn mowers, please help me... I've had to borrow my neighbor's push mower for the meantime

Josh
May 2009