Product Overview
The Outer Wire Harness is the critical exterior electrical backbone for your Kobelco SK200-6 or SK210-6 excavator. While the inner harness manages cab electronics, this “Outside” harness is responsible for routing power and communication to the machine’s outer extremities—the boom, frame, and undercarriage components .
The SK200-6 and SK210-6 series, including the SK200LC-6, SK210LC-6, and SK210NLC-6 variants, represent Kobelco’s reliable -6 generation of hydraulic excavators equipped with the advanced “Mechatro Control” electronic-hydraulic system . The outer wire harness plays an essential role in this system, ensuring that exterior sensors, lighting, and safety devices function properly regardless of job site conditions.
Operating in direct exposure to mud, water, UV radiation, extreme temperatures, and constant vibration, this harness is engineered with heavy-duty materials to resist abrasion and corrosion . If your excavator exhibits flicking lights, non-functional travel alarms, or intermittent exterior sensor faults, replacing this harness often provides a more permanent solution than repairing individual damaged wires.
Key Features
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Exterior-Grade Construction: Manufactured with UV-resistant, oil-resistant, and corrosion-resistant wire insulation, designed to withstand direct sunlight, temperature extremes from -30°C to +85°C, moisture, and chemical exposure common in construction environments .
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OEM Specification Compliance: Built to meet the exact electrical requirements of Kobelco SK200-6 and SK210-6 series excavators, ensuring seamless integration with critical systems including engines, lighting systems, and electronic control units .
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Weather-Sealed Connectors: Features industrial-grade waterproof connectors that provide reliable sealing against moisture and dust ingress, maintaining electrical integrity in wet and dirty job site conditions .
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Color-Coded Wiring: Precision color-coded PVC/nylon insulated wires enable easy circuit identification, simplifying installation and future troubleshooting .
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Protective Tubing & Conduit: Critical harness sections are wrapped in reinforced black tubing and conduit to protect against chafing and abrasion against the excavator’s metal frame.
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Fuse Box Integration: Built-in fuse protection safeguards electrical circuits against overloads, ensuring system safety .
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Corrosion-Resistant Terminals: Equipped with plated terminals that resist rust and maintain consistent conductivity despite exposure to rain, humidity, and hydraulic fluid.
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Wide Temperature Operation: Rated for reliable performance from -30°C to +85°C, ensuring functionality in Arctic to desert conditions .
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Plug-and-Play Installation: Direct replacement design allows for straightforward installation without cutting, splicing, or soldering.
Compatibility
This outer wire harness is a direct replacement for the following Kobelco excavator models:
SK200-6 Series
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Kobelco SK200-6
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Kobelco SK200LC-6
SK210-6 Series
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Kobelco SK210-6
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Kobelco SK210LC-6
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Kobelco SK210NLC-6
Serial Number Ranges:
Related Part Numbers: YN13E01137P4, LQ13E01072P2 (verify original part number before ordering)
Also Known As: Exterior Harness, Outer Wiring Loom, Boom Harness, Chassis Outer Harness, Frame Harness, Light Harness
Please verify your machine’s serial number and inspect the connector on your existing harness before ordering to ensure correct fitment.
Components Connected by the Outer Harness
The outer wire harness interconnects all critical exterior electrical systems on the SK200-6 and SK210-6:
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Working Lights: Boom lights, cab roof lights, and chassis working lights for night operation
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Travel Alarm: Reverse warning alarm for safety compliance when traveling
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Swing Alarm: Rotational warning alarm for swing operation
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Exterior Sensors: Pressure and angle sensors located on the boom, arm, and frame
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Attachment Sensors: Quick coupler and hydraulic attachment electrical connections
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Travel Control Sensors: Undercarriage travel motor and pedal sensors
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Frame Ground Points: Chassis grounding for proper circuit completion
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Swing Circle Components: Swing brake and rotation sensors
Signs Your Outer Harness Needs Replacement
The outer wire harness is subject to accelerated degradation due to environmental exposure and machine articulation. Replace your outer harness if you observe:
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Intermittent Exterior Lighting: Boom lights, cab roof lights, or working lights flicker, fail to turn on, or shut off randomly due to chafed wires grounding against the boom structure.
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Failed Travel or Swing Alarms: The backup alarm fails to sound when traveling, or the swing alarm does not activate, creating safety hazards and potential regulatory compliance issues.
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Corroded Connectors: Visible green or white oxidation on exterior connector plugs, often causing high resistance or open circuits .
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Visible Physical Damage: Cut, melted, crushed, or severely cracked wire insulation observed along the boom, frame rails, or undercarriage.
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Intermittent Sensor Faults: Fault codes related to exterior pressure or angle sensors caused by harness discontinuity rather than actual sensor failure.
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Exposed or Frayed Wires: Protective conduit damaged, exposing internal wires to moisture, dirt, and mechanical damage.
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Previous Splices: The existing harness shows evidence of multiple previous repairs, taped splices, or bypassed circuits, indicating degraded reliability.
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Inconsistent Electrical Operation: Exterior electrical functions work sometimes but fail at other times, especially when the boom is raised or the machine swings.
Benefits
Why choose our Outer Wire Harness for your Kobelco SK200-6 or SK210-6?
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Restores Exterior Lighting Reliability: Ensures consistent operation of all working lights, improving job site safety and visibility during night operations and low-light conditions.
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Restores Safety Alarms: Fixes non-functional travel and swing alarms, ensuring the excavator meets required safety standards for reversing and rotating operations.
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Eliminates Intermittent Electrical Faults: Permanent replacement of a chafed or corroded harness resolves intermittent shorts and open circuits that are time-consuming to diagnose and repair.
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Weather-Sealed Reliability: New connectors and seals protect against future moisture damage, providing longer service life than patched or repaired old harness sections .
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Prevents Electrical Hazards: Replaces chafed wiring that could short against the metal frame, significantly reducing the risk of electrical fires.
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Restores Sensor Function: Ensures exterior pressure and angle sensors provide accurate data to the Mechatro Control system for optimal machine performance .
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Saves Diagnostic Time: Replaces the entire exterior circuit at once, avoiding hours of labor spent chasing a single broken wire within a bundle.
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Built for the Environment: Constructed with corrosion-resistant materials and industrial-grade components rated for the demanding conditions of construction sites .
Technical Specifications
Installation Tips
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Professional Installation Recommended: Outer harness replacement requires access to the boom, frame, and undercarriage areas. Professional installation by qualified technicians is strongly recommended.
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Disconnect Battery: Always disconnect the battery ground terminal before starting any electrical work to prevent shorts.
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Photograph Original Routing: Take extensive reference photos of the original harness routing before removal, noting every cable tie location, clip position, and grommet placement along the boom and frame.
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Inspect Connectors: Before installing the new harness, clean the mating connector ports on the machine side to ensure a good seal.
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Use Protective Loom: Where the harness passes through bulkheads, boom pivots, or near moving parts, ensure the protective sleeve is properly positioned.
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Route Away from Hazards: Keep the harness clear of pinch points, sharp edges, hot surfaces, and moving components.
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Secure with Cable Ties: Use heavy-duty UV-resistant cable ties to secure the harness along the boom and frame. Leave slight service loops near moving joints to allow for articulation.
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Apply Dielectric Grease: Apply a small amount of dielectric grease to the inside of rubber connector seals (not the metal terminals) to enhance waterproofing.
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Test Before Final Securing: Before fully securing the harness with all cable ties, test all exterior lights, alarms, and sensors to confirm proper operation.
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Use Correct Routing: Follow the factory routing path exactly as specified in the service manual (Publication No. S5YN0012E-03) .
Why Choose Our Outer Wire Harness?
We understand that Kobelco SK200-6 and SK210-6 excavators remain reliable workhorses in many fleets, valued for their durability and performance . However, as these machines accumulate operating hours, exterior wiring—constantly exposed to the elements and mechanical stress—often becomes a primary source of electrical issues.
The Outer Wire Harness is frequently the hidden cause of frustrating problems like flickering lights, non-functional alarms, and intermittent sensor faults. Unlike the inner cab harness, which is protected from the elements, the outer harness faces direct exposure to mud, rain, vibration, and temperature extremes daily.
Our harness is manufactured to strict quality standards using corrosion-resistant materials, UV-protected insulation, and precision-molded waterproof connectors . Every harness undergoes continuity testing to ensure all circuits are intact before shipment. Whether you are troubleshooting exterior lighting failures, addressing non-functional safety alarms, or performing preventative maintenance on your fleet, this direct-fit outer harness restores the electrical integrity of your SK200-6 or SK210-6 excavator.
Order your SK200-6/SK210-6 Outer Wire Harness today and restore reliable electrical function to the exterior components of your Kobelco excavator. In stock and ready for immediate worldwide shipping. Bulk pricing available for fleet maintenance.
