Cadillac CTS (2005 - 2007) - fuse box diagram - Auto Genius Cadillac CTS (2005 – 2007) – fuse box diagram. Year of production: 2005, 2006, 2007. Underhood Fuse Block. The underhood fuse block is located in the engine Cadillac CTS - 2005 Fuse Box Diagram Cadillac CTS - 2005 Fuse Box Diagram. Home; Cadillac; CTS - 2005 Fuse Box; These are some examples of symbols that may be found on the vehicle: v. Testing the Alarm. 1.