: Power for the trailer ABS is traced from the fuse panel or a relay box near the battery. Maintenance & Troubleshooting Tips
: If corrosion is found, use a dedicated quick-drying electrical cleaner spray after removing all fuses and relays. 1998-kenworth-t800-fuse-panel-diagram
: On pre-2001 models like the 1998 T800, this is typically located on the engine-side firewall on the driver's side. : Power for the trailer ABS is traced
: Usually the fifth relay from the bottom on the right side of the distribution block. 1998-kenworth-t800-fuse-panel-diagram
The 1998 T800 electrical system uses terminal strips and spare circuits to allow for adding options. Specific relays identified in service manuals include: