Wiper Switch......Help

I have a '72 and I bought an aftermarket rotary wiper switch to put in a custom dash I made(http://camnick.home.att.net/dash.htm).I was just told that 68-72 Chevelle wiper motors are wired hot and get their ground from the switch. Is there anyone out there that produces a switch (preferably rotary), or is there one from a different vehicle I can use. I don't have that much room in back of the dash, so size of the switch is a concern. Any help would be appreciated

C.C.