wiring diagrams

[projectice]

Ok so i never use my rear defroster.

I want to turn the switch for it into a switch for something else
but i need the wiring diagram for it.

There are 5 wires leading off of the switch and i have no clue what any of them are for.

i have searched EVERYWHERE for this wiring diagram but have come up empty

if you can help me i would greatly appreciate it

1988 Chevy S10 Blazer
4.3L V6
2wd 2dr

**Rear Defroster switch located on left of cluster...right above the light controls**