Jumper Harness for Blue Bird Cummins ISB 6.7 L Systems
What is it?
The Blue Bird Cummins ISB 6.7 L Jumper Harness connects to the DEF Head Unit, ensuring seamless power and signal routing for buses powered by Cummins ISB 6.7 L engines. It prevents wiring disruptions, enabling consistent DEF operation during high-frequency transit routes.
Why choose this OEM Jumper Harness?
Designed to match Blue Bird electrical layouts and Cummins ISB control logic, this OEM harness plugs directly into factory connectors—no piecing or rewiring necessary. It eliminates misfit circuits, error messages, and ECU faults that can occur with substandard harnesses.
Key Benefits
✅ OEM plug-in fit for Blue Bird vehicles with Cummins ISB 6.7 L engines
✅ Maintains continuity between DEF system and head unit
✅ Moisture-resistant, vibration-proof wiring construction
✅ Compatible with original sensor and harness connections
✅ Helps prevent SCR alerts, sensor faults, and system downtime
Applications
Created for Blue Bird school bus, shuttle, and transit platforms equipped with Cummins ISB 6.7 L power units. Offers dependable DEF connectivity for stop-and-go street cycles and extended service use.
Installation Notes
Before connecting, shut off ignition and isolate power. Remove old harness if applicable, following wiring labeling. Plug in the OEM harness into placement sockets and secure latches. After installation, inspect for correct seating and run a system check via scan tool to confirm proper response.
Final Thoughts
If your Blue Bird bus’s DEF system shows wiring errors or connectivity issues, this Cummins ISB 6.7 L jumper harness offers a trusted OEM-compatible replacement. It keeps routes operating smoothly and DEF systems in sync—available now at Tamerx.