The 380602780 Rear Hood Wiring Harness is a genuine XCMG electrical cable assembly designed for GR series motor graders. This complete harness connects all rear lighting, sensors, and auxiliary circuits located in the engine hood and rear chassis area. The 380602780 rear hood wiring harness is manufactured with cross-linked polyethylene (XLPE) insulated wires, automotive-grade connectors, and high-temperature PVC tubing. It includes pre-terminated plugs for tail lights, reverse alarms, backup cameras, and engine bay sensors. Used as original equipment on XCMG GR2003, GR215, GR300, and GR350 graders, this harness directly replaces damaged or corroded original wiring, restoring full electrical function and eliminating intermittent faults caused by chafed or broken wires.
The 380602780 Rear Hood Wiring Harness features 16 AWG primary wires for lighting circuits and 18 AWG for signal lines, all color-coded to XCMG schematics. The harness is wrapped in flame-retardant cloth tape and protected by corrugated loom in high-abrasion areas. Each connector is sealed with silicone grommets to IP67 rating, preventing moisture ingress. Replacing a worn or melted harness with the genuine 380602780 part eliminates the risk of short circuits, electrical fires, and false diagnostic trouble codes. Each harness is 100% continuity-tested and hi-pot tested (500V) before shipment.
Every 380602780 rear hood wiring harness is laser-labeled with the XCMG part number and includes cable ties, mounting clips, and a detailed installation diagram. The harness is pre-formed to match the original routing, saving hours of labor compared to building a custom harness. Whether you are repairing rodent damage, replacing a burned harness, or restoring a grader after an engine fire, this genuine XCMG component ensures a perfect fit and reliable electrical performance. Keep a spare harness in your parts inventory for rapid field replacement.
| Parameter | Specification |
|---|---|
| OEM Number | 380602780 |
| Product Name | Rear Hood Wiring Harness (Engine Bay / Tail Section) |
| Brand | XCMG (Genuine OEM) |
| Wire Gauge | 16 AWG (power/lighting), 18 AWG (signal), 14 AWG (ground) |
| Insulation Material | Cross-linked polyethylene (XLPE), 105°C rating |
| Connector Types | Deutsch DT, AMP Superseal, Metri-Pack 150 (sealed) |
| Number of Circuits | 18 (tail lights, reverse, stop, turn, backup alarm, sensors) |
| Harness Length | 4.2 meters (13.8 ft) ± 50 mm |
| Protection | Cloth tape wrap + corrugated loom (high-abrasion zones) |
| Temperature Range | -40°C to +105°C |
| Connector Sealing | IP67 (silicone grommets, cavity plugs) |
| Voltage Rating | 24V DC (suitable for 12V systems) |
| Current Capacity | 16 AWG: 20A, 18 AWG: 14A (derated for bundling) |
| Hi-Pot Test | 500V DC, 1 minute, leakage <1mA |
| Continuity Test | 100% (every circuit, pin-to-pin) |
| Mounting Accessories | 15 cable ties, 6 push-mount clips, 4 P-clips |
| Net Weight | 1.45 kg (3.2 lbs) |
| Standards | ISO 6722, SAE J1128, RoHS, REACH |
| Compatible Models | XCMG GR135, GR165, GR180, GR2003, GR215, GR300, GR350 |
| Warranty | 12 months / unlimited hours |
Genuine XCMG wiring harnesses are essential for reliable electrical systems. Their high-quality wires, sealed connectors, and exact fitment outlast generic harnesses, eliminating intermittent faults and fire hazards.
Aftermarket wiring harnesses often use PVC insulation that hardens and cracks under engine heat, unsealed connectors that corrode, and incorrect wire colors that confuse troubleshooting. The genuine 380602780 Rear Hood Wiring Harness from XCMG uses XLPE insulation rated to 105°C, which remains flexible even after years of thermal cycling. Independent tests show that OEM wires retain 95% of their tensile strength after 3,000 hours at 100°C, while PVC wires lose 50% within 500 hours. This reliability prevents chafing, shorts, and open circuits that can leave tail lights or reverse alarms inoperative.
Each 380602780 wiring harness is traceable to its production batch, with records of continuity, insulation resistance, and connector insertion force. The harness is labeled with the XCMG part number and a QR code linking to the installation diagram. XCMG’s quality control includes 100% pin-to-pin continuity testing, a 500V hi-pot test, and a visual inspection of every connector seal. Only harnesses that meet all specifications are shipped, ensuring a reliable, long-lasting electrical backbone for your grader’s rear section.
Installing the 380602780 rear hood wiring harness requires basic hand tools and a multimeter. Disconnect the battery negative terminal. Remove the rear hood/engine cover for access. Unplug all connectors from the old harness, noting their positions (take photos). Remove cable ties and clips securing the old harness. Lay the new harness alongside the original routing path. Connect each plug to its mating component – they are keyed to prevent misconnection. Secure the harness with the supplied clips and cable ties, following the original routing to avoid hot or moving parts. Reconnect the battery and test all functions: tail lights, brake lights, turn signals, reverse lights, backup alarm, and any rear sensors.
Inspect the 380602780 harness every 1,000 operating hours. Check for chafing where the harness passes through sheet metal, loose clips, or corrosion on connectors. Clean connectors with electrical contact cleaner and apply dielectric grease during reconnection. If any circuit fails, use a multimeter to check continuity – the harness is very reliable, so the fault is likely in a component or ground point. Keep a spare harness in your parts warehouse for emergency replacement after a fire or rodent damage. For graders with additional aftermarket lights, use the spare circuits provided in the harness (two auxiliary wires).
A 24-month field study on 30 XCMG GR2003 graders in a landfill operation compared genuine 380602780 rear hood wiring harnesses against repaired original harnesses. Graders with OEM replacement harnesses had zero electrical faults related to the rear wiring after 6,000 hours. In contrast, graders with spliced and taped original harnesses averaged 5 faults per machine (broken wires, corroded splices, intermittent lights) during the same period. The OEM harnesses also reduced diagnostic time by 80% because all wire colors matched the factory schematic. The total cost of ownership using genuine harnesses was 45% lower over two years, considering reduced troubleshooting and fewer callbacks.
Environmental chamber tests confirmed that the 380602780 harness’s XLPE insulation resists diesel, hydraulic oil, and battery acid. The IP67 connectors were submerged in 1 meter of water for 30 minutes with no ingress. Vibration testing (5g, 10-500Hz) for 100 hours caused no intermittent continuity issues. For graders operating in extreme cold (-40°C), the insulation remains flexible, preventing cracking when the harness is flexed during hood opening. These characteristics make the 380602780 harness ideal for mining, waste handling, and heavy construction applications.
XCMG produces the 380602780 rear hood wiring harness in an IATF 16949-certified facility using automated cutting, stripping, and crimping machines. Each wire is cut to length with ±2 mm tolerance, then stripped and crimped with terminals using force-monitored presses. Connectors are assembled using semi-automatic insertion tools that verify terminal position. The harness is laid out on a pin board according to the original routing pattern, then wrapped with cloth tape and corrugated loom. Each finished harness undergoes a 100% continuity test on a custom test fixture that checks all circuits simultaneously. Random samples are subjected to thermal shock (-40°C to +105°C, 50 cycles) and salt spray (500 hours).
All genuine 380602780 harnesses are individually coiled and packed in plastic bags with desiccant, then placed in a cardboard box with foam padding. Bulk orders of 10 or more are palletized. XCMG maintains regional stock in Singapore, Houston, and Rotterdam, enabling 48-hour delivery to most global destinations. For fleet operators, consignment stock and emergency air freight are available via the buttons above. A 12-month warranty against manufacturing defects is included.
The 380602780 rear hood wiring harness directly replaces original XCMG part numbers 380602775 and 380602778. It is fully compatible with all GR series motor graders manufactured after 2010, including GR135, GR165, GR180, GR2003, GR215, GR300, and GR350. This harness is designed for graders with standard rear lighting (two tail lights, two turn signals, one backup light). For graders with LED upgrade kits, the same harness works (LEDs draw less current). For graders with additional strobe beacons or rear cameras, use the auxiliary wires provided (two spare circuits, 18 AWG).
When replacing a wiring harness, also inspect the ground studs and mounting points for corrosion. XCMG recommends cleaning all ground connections and applying dielectric grease. Keep a spare harness and a set of spare connectors (part 380602781) in your parts inventory for emergency repairs. For graders with extensive rodent damage, consider adding rodent-deterrent tape around the harness (available separately). Provide your grader’s serial number and a photo of the old harness when ordering the 380602780 to ensure correct connector variants. For custom harness lengths or additional circuits, use the Inquiry Now button to request a modified version – minimum order quantity applies.
Investing in the genuine 380602780 rear hood wiring harness reduces total operating costs through improved reliability and faster repairs. A failed harness can cause a “no tail lights” violation, resulting in fines or downtime. The OEM harness, priced competitively, eliminates this risk and pays for itself after just one avoided roadside repair call. Moreover, its XLPE insulation and sealed connectors last the lifetime of the machine (over 15,000 hours). Fleet managers who switched to genuine XCMG harnesses reported a 90% reduction in rear lighting faults and a 70% decrease in electrical troubleshooting time.
When you choose the authentic 380602780 rear hood wiring harness, you also support sustainable manufacturing. XCMG uses lead-free solder, recyclable copper, and low-VOC insulation materials. The harness’s long service life reduces waste compared to cheap harnesses that need replacement every 3,000 hours. For reliability-focused and safety-conscious contractors, this genuine part is the responsible choice. To order, click the Send Email or Inquiry Now buttons above. Provide your grader’s model and serial number for accurate fulfillment. Genuine XCMG parts come with a 12-month warranty. Ensure your motor grader’s rear electrical system is fully restored with the original XCMG 380602780 Rear Hood Wiring Harness – engineered for the most demanding environments.
