The ornamental design for an adaptor for a motorvehicle lighter socket, as shown and described.
FIG. 1 is a front perspective view of an adaptor of a motor vehicle lighter
socket showing my new design;
FIG. 2 is a front perspective view wherein FIG. 1 has been rotated about
90° to showing my new design for an adaptor for a motor vehicle
lighter socket;
FIG. 3 is a front view of my new design for an adaptor for a motor vehicle
lighter socket, the bottom view being a mirror image;
FIG. 4 is a side view of my new design for an adaptor for a motor vehicle
lighter socket, the opposite view being a mirror image; and,
FIG. 5 is an end view of FIG. 2 showing my new design for an adaptor for a
motor vehicle lighter socket.