accessing the grill parking lamp/turn signal bulb

ok so maybe I was just happy it was the one thing I did right all day! Impressed by these lights -heavy glass, metal housing, gasket - they built the crap out of those suckers - maybe we are just so used to plastic everything today. I see they should be amber bulbs for Plymouths in '68 so glad I pulled both to clean up and replace bulbs .....