electroken,

well... i went under there and tried to take a picture but it looks like hell. you can still go see it if you want:

http://home.sc.rr.com/mroberts/wiper.jpg

It isn't worth putting inline and wasting everyones bandwidth.

the bottom line is that there appeared to be 3 wires into the top of the switch and three to the bottom. there was a pink one. a blue one with a reddish line down it and a black one (that i think had white polkadots but it is late and i could just be seeing things in the dark)

i hope this garbled bunch of info helps some.