Lost power to window defroster switch
 

I've got a '69 911 which is not getting power to the rear window electric defroster switch. All fuses look good and it was working before I removed the switch as part of another project. It is definitely a case of there simply is no power coming to the switch. I just can't find where it might have cut out.

Where is the fuse for this? I can not find reference to one in either my owner's manual or on the fuse covers. Is there a relay that might have died or been fried?

Any help would be appreciated.