The CNH Genuine 73345674 Wiring Harness Kit is a complete OEM electrical solution engineered to restore safe, reliable and factory-correct wiring in compatible New Holland tractor models. Electrical harnesses are critical for proper operation of engine systems, lighting, instrumentation, safety switches and charging circuits. Over time, heat, vibration, moisture and rodents can damage wiring, leading to intermittent faults or complete electrical failure.

This genuine CNH wiring harness kit replaces the entire primary electrical layout with OEM-spec wiring, connectors and protective sheathing. Each harness is manufactured to strict CNH standards, ensuring correct wire gauge, insulation quality, connector fitment and routing accuracy.

By replacing all major harnesses together, this kit eliminates mismatched repairs, reduces troubleshooting time and restores original electrical reliability across the tractor.

Kit Contents

The 73345674 Wiring Harness Kit includes the following genuine components:

Key Features & Benefits

• Genuine CNH OEM wiring harness kit
• Part Number: 73345674
• Complete electrical harness replacement solution
• OEM-grade wiring, connectors and insulation
• Correct length, routing and connector pinouts
• Improves electrical reliability and safety
• Prevents short circuits, voltage drops and intermittent faults
• Reduces downtime and diagnostic effort
• Direct-fit replacement – no modification required

Applications

Compatible with New Holland tractors, including:

• TT35
• TT45
• TT40
• NH4510
• NH3510
• NH4010

(Always verify tractor variant and electrical configuration before installation.)

Why Choose a Genuine CNH Wiring Harness Kit?

• Maintains factory electrical architecture
• Protects ECU, sensors and electrical components
• Ensures proper lighting, charging and safety system operation
• Far more reliable than patched or aftermarket wiring
• Long service life in agricultural operating conditions