I'm thinking ...
... that what the OP is describing is that period MOPAR lamps, small round with a chrome bezel.
Popular upgrade during that period for some reason.
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- WHY IS IT ... 
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... that everything you buy in the grocery store is either wrapped in or contained in plastic but the government doesn't want you to carry it out in a plastic bag?
WONDERING IN W(BY GOD)V ...
DIAGNOSED CDO - (OCD In Correct Alphabetical Order)