I have an Ibanez s470 and need a wiring diagram for 2humbuckers and 1 singlecoil with a 3 position swicht

What kind of switching options do you want? there are many ways to skin a cat but there are more ways than that to wire a guitar..
Visit the ibanez website for wiring diagrams if it is something simple you want. for more customised switching options,you should contact the pickup brand's customer care...for example,when i bought Dimarzios for my Ibanez,i emailed dimarzio and they replied within 24 hours with a pic of the correct wiring.