This is, I assume, intended for taxi cabs and maybe police cars. I've never actually seen one, though the GM part numbers are all there, so someone could likely assembly such a setup!
Round light left of the defog switch, it looks like!
Inserting the image appears to fail, so unless someone can fix that, you'll have to grab it as the attached thumbnai
Why do you say it was never an RPO? I thought it was RPO B02. I don't know if it's in the accessorizer, but's listed as an option in the GM Vintage Vehicle services stuff (per 1969Pontiac.com)
