I need the fuse box schematics for a 1998 ford mustang. I Feb 17, 2007I need the fuse box schematics for a 1998 ford mustang. I'm trying to find if the fuel pump is bad, or just a relay, and - Answered by a verified Ford Mechanic 1998 ford mustang gt: fuse boxne - JustAnswer May 31, 2012I have a question about my 1998 ford mustang gt. I need to locate a certain fuse and the fuse box in the engine compartment aren't labeled. There numbered, so I don't know which fuse goes to the problem i'm having. I have an owners manual and Chilton's but either one have a sufficient and/or labeled diagram.