Moroso Mustang Fuse Box Cover 74230 (98-04 All) Moroso fabricates this Mustang Fuse Box Cover from light weight aluminum for superior strength and keeps the natural aluminum finish for aggressive good looks under your hood. Application. This Moroso Fuse Box Cover is designed to fit all 1998 through 2004 Mustangs, including the V6, GT, Bullitt, Mach 1 and SVT Cobra models. Fitment: Details4.4/5(37)Brand: Moroso SOLVED: Fuse box diagram 2003 mustang - Fixya Oct 30, 2013Fuse box diagram 2003 mustang - Moroso 2003 Ford Mustang Fuse Box question. Search Fixya Question about 2003 Ford Mustang Fuse Box Cover. 1 Answer . Fuse box diagram 2003 mustang - 2003 Ford Mustang Fuse Box Cover.