Chuck, I believe Paul is correct. You have an after market sunroof. My first 6.3, which I sadly destroyed, had just such. a sunroof. The car was a 1970, originally titled to a leasing company in Los Angeles as a California model. The switch was mounted below the dashboard. Otherwise, it appeared as original. Webasto was the manufacturer of both the original and this particular after market installation. Webasto still exists and provides OEM and after market products for a number of auto manufacturers. Search the web for this company and an installer near you. You may get help. I know of such an installer in Hayword, CA which I found on the web.