These LED lights have the "double bullseye" design just like the marker/clearance lights on Airstreams from 1969 and many later models.  The only difference in look between these and the originals is that the base is color matched to the lens, rather than white like the originals.

13 LEDs per light.  Tough potted circuit board for total protection against moisture and vibration.  Positive lead wire off back of base.  Ground through one of the two mounting screws.

Choose from red or amber.