hitch ball thus securing it to the strap hanger 24 storage of hitch pins 6 is illustrated in fig2 and 24 the hitch pin 6 is inserted into one of the pin holes 39 located in the frame 21 tube and transversely retained relative to the frame 21 by a bridge pin 9 inserted into a through hole 10 perpendicular to the central axis of the hitch pin 6 an alternate embodiment to the present invention is a unit which mounts to a perpendicular surface or wall and is not supported by a horizontal surface or floor this alternate embodiment as shown in fig2 26 consists of a generally c shaped bracket 60 which is removably mounted to a wall via screws through its center face 61 two pins 35 62 removably attached to the c shaped bracket 60 serve as attachment and retaining points for hitch mounted accessories a cargo carrier 1 is removably secured to the c shaped bracket 60 by aligning the through hole 7 in the cargo carrier plug 5 with the locating pin 35 and sliding the cargo carrier plug 5 onto the locating pin 35 until the side surface of the cargo carrier plug 5 contacts the side surface of the c shaped.