Company Introduction
Guangzhou Chaotian Construction Machinery Equipment Co.,Ltd is dedicated to providinghigh-quality, high-performance construction machinery parts for global customers,covering avariety of equipment such as excavators, bulldozers, loaders, etc.
Products Description
|
Product name |
External Main Wiring Harness |
|
Part number |
233-1033 |
|
Excavator model |
320C |
|
Lead time |
1-3 days after payment |
|
Packing |
neutral/original |
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MOQ |
1 PC |
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Quality |
high quality |
|
Warranty |
3-6 months |
|
Shipping |
DHL, UPS, FedEx, Air, Sea, DDP |
|
Payment |
TT/Alibaba Trade Assurance/Credit card/Western Union/Alipay/Wechat |
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Excavator Wiring Harness Types

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Main/Chassis Harness
The central nervous system of the excavator.
Connects the cab, engine ECU, main control valves, and major sensors to the main power distribution.
High-current capable for critical functions.
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Engine Harness
Dedicated to the engine compartment.
Links the Engine Control Unit (ECU) with sensors (crankshaft, camshaft, temperature, pressure) and actuators (injectors, fans, glow plugs).
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Monitor/Display Harness
A dedicated sub-harness for the information cluster.
Transmits data from various ECUs and sensors to the dashboard display.
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Travel Motor Harness
Connects the travel motors (left and right) to the main control system.
Carries signals for speed, direction control, and related sensors.
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Sensor-Specific Harnesses
Daily Startup and Operation
- Warm Up the System: After starting the engine, allow it to run at low speed with no load (approx. 5-10 minutes) to warm up the hydraulic system.
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Avoid Rough Operation: Operate smoothly and avoid sudden acceleration, abrupt stops, or excessive impact.
- Prohibit Overloading: Do not exceed the rated working pressure of the hydraulic pump for extended periods to prevent system overload.


Excavator External Wiring Harness - Usage Guide
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Visual Inspection
Check for visible damage: cuts, abrasions, cracked insulation, or crushed sections.Ensure all connectors are clean, dry, and free of corrosion.
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Connection Procedure
Power Off: Always disconnect the negative battery terminal before handling wiring.
Match Connectors: Align connector shapes and guide pins correctly. Never force a connection.
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Routing & Protection
Follow the original routing path precisely. Use existing clips, conduits, or sleeves.
Avoid: Running near hot components (exhaust), sharp edges, or high-wear areas. Maintain safe distance from hydraulic lines.
Secure: Fasten with cable ties every 15-30 cm to prevent dangling, vibration, or snagging.
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Maintenance & Troubleshooting
Keep connectors clean. Use electrical contact cleaner if needed.
For Diagnostics: Use a multimeter to check for continuity, shorts to ground, or correct voltage at specified test points.
Repairs: Use only proper crimp tools, heat-shrink tubing with sealant, and wire of the same gauge/specification. Avoid simple electrical tape for permanent repairs.
What do We Sell?
We sell engine parts,like engine rebuild kit,full gasket,fuel injection pump,turbocharger,water pump fuel injector,and so on,we have electric parts like controllers,solenoid valves,monitor,sensors ect,we also sell hydraulic parts like final drives,hydraulic pump,besides,we have diagnostics tools ,seal kits,undercarriage parts and rubber parts for excavators and other heavy equipments.

FAQ
Q:Do you have your own factory or partners?
A: We operate our own factory in China and partner with top-tier suppliers for stable supply chains.
Q:How to verify part compatibility?
A:Provide your excavator model ,pictures and part number for verification.
Q:Which excavator brands are your parts compatible with?
A:Compatible with major brands like Caterpillar, Komatsu, Hitachi, Volvo, Kobelco,Doosan,etc.
Q:What payment methods are supported?
A:We support T/T, Western Union, PayPal (small amounts), and Alibaba Trade Assurance.
Q:Are products tested before shipment?
A:All products undergo 100% functionality testing before shipment to ensure they are fully functional

Hot selling high quality excavator parts
Good quality, good service, good cooperation, willing to reach cooperation
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