80-JB400-1 Rev. D 9-11
MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION
Vehicle Data Bus Connections Connecting J1708 /J1587
5. Splice the red J1708- wire from the accessory cable to the DATA- wire of the engine
diagnostic connector.
6. Start the vehicle and verify that the truck is in good working order and displays no dash
faults.
7. Go to Verifying Data Source Connectivity on page 9-12.
8. Stow and secure any loose wires, making sure to keep the wires clear of sharp edges
and away from panels and moving parts such as throttle and brake linkage.
• Dress any bare-ended wires to prevent a short.
• Maintain wire twists as close to the splice as possible.
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