Do you have a diagram of the 2003 f350 fuse panel that Fuse box diagram for Ford F350 diesel power stroke. I need a diagram of the fuse box on my f350 diesel power stroke - the running lights on my horse trailer and the dash lights on the truck quit working. I have a 2003 f 350 i need a diagram for fuse box - JustAnswer I have a 2003 f 350 i need a diagram for fuse box. Customer Question. i have a 2003.. i have a 2003 f 350 i need a diagram for fuse box. Submitted: 8 years ago. Category: Ford. Show More. Show Less. Ask Your Own Ford Question. Share this conversation. Answered in 4 minutes by: 7/12/2010.