: If corrosion is found, use a dedicated quick-drying electrical cleaner spray after removing all fuses and relays.
: Many electrical failures on this model are traced to broken or loose ground wires, which are typically white in Kenworth schematics. 1998-kenworth-t800-fuse-panel-diagram
: Often grouped together; if multiple exterior lights fail simultaneously, it often indicates a loose ground or a blown main fuse in the firewall panel. : If corrosion is found, use a dedicated
The 1998 T800 electrical system uses terminal strips and spare circuits to allow for adding options. Specific relays identified in service manuals include: : If corrosion is found