Another tip to nail down factory astro roof versus various aftermarket ones....far as I remember only the factory astro roof will have a small pop in plug next to the switch which as noted is chrome the plug can be removed and a hand crank can then be inserted to manually crank the slider shut in case switch fails. Only the factory astro roof has this nspection plug...
Could be worse you could have one of the pop up roofs....popular in the Mustangs..
Question now is: Who has a replacement pop in plug for Astro's that have been redone (and plug gone missing) AND, who has their original hand cranks with packaging and instructions?