1970 Duster marker lights

H22A4 is right; all Dusters were built with side marker lights+reflectors front and rear.

From 1/1/68 the requirement was for side marker lights and/or reflectors. From 1/1/70, the "/or" was dropped; since then the requirement has been for side marker lights and reflectors. Amber front, red rear. The front ones may (but don't have to) flash with the turn signals (in phase or opposite-phase); more info on that here.