: For specific components like the fuel pump, the fuse is often located near the starter . Common Circuit Identification

: If corrosion is found, use a dedicated quick-drying electrical cleaner spray after removing all fuses and relays.

: On pre-2001 models like the 1998 T800, this is typically located on the engine-side firewall on the driver's side.

For detailed schematics, technicians often reference the KM815020 Pre-2001 Service Manual which covers the B-Cab power distribution boxes. Kenworth T80 or T800 fuse panel diagram needed