The ornamental design for a housing for an auxiliarypower outlet, as shown and described.
FIG. 1 is a bottom front perspective view of a housing for an auxiliary power outlet showing our new design;
FIG. 2 is a top rear perspective view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a left elevational view thereof;
FIG. 6 is a right elevational view thereof;
FIG. 7 is a top plan view thereof; and,
FIG. 8 is a bottom plan view thereof.
The broken lines in the drawings are for the purpose of illustrating portions of the housing for an auxiliary power outlet that form no part of the claimed design.