The ornamental design for a vehiclemarkerlightcover, as shown and described.
FIG. 1 is a perspective view of a vehicle marker light cover showing my new design, with the broken lines showing for illustrative purposes only and forming no portion of the claimed design.
FIG. 2 is a top view thereof.
FIG. 3 is a front elevational view thereof, with the opposite side being a mirror image thereof; and,
FIG. 4 is a side elevational view thereof, with the opposite side being a mirror image thereof.