The 380501518 Rear Frame Wiring Harness is a genuine XCMG electrical cable assembly designed for GR series motor graders. This complete harness routes power and signals to all rear chassis components, including tail lights, backup alarms, rear work lights, and hydraulic valve sensors. The 380501518 rear frame wiring harness is manufactured with cross-linked polyethylene (XLPE) insulated wires, sealed Deutsch and AMP connectors, and high-temperature corrugated loom. It includes pre-terminated plugs for the rear junction box, backup camera, and frame-mounted solenoids. Used as original equipment on XCMG GR2003, GR215, GR300, and GR350 graders, this harness directly replaces damaged or corroded original wiring, restoring full electrical functionality and eliminating intermittent faults caused by chafed or broken wires in the harsh under-chassis environment.
The 380501518 Rear Frame Wiring Harness features 14 AWG primary wires for lighting circuits and 18 AWG for signal lines, all color-coded to XCMG factory schematics. The harness is wrapped in abrasion-resistant cloth tape and protected by split corrugated loom in high-exposure areas. Each connector is sealed with silicone grommets and cavity plugs to IP67 rating, preventing moisture ingress from road spray and pressure washing.
Replacing a worn, melted, or rodent-damaged harness with the genuine 380501518 part eliminates the risk of short circuits, electrical fires, and false diagnostic trouble codes. Each harness is 100% continuity-tested, hi-pot tested (500V), and functionally verified on a test fixture before shipment.
Every 380501518 rear frame wiring harness is laser-labeled with the XCMG part number, production date, and includes cable ties, push-mount clips, and a detailed installation diagram. The harness is pre-formed to match the original routing along the frame rail, saving hours of labor compared to building a custom harness.
Whether you are repairing damage from debris impact, replacing a harness after an engine fire, or restoring a grader after years of corrosion, this genuine XCMG component ensures a perfect fit and reliable electrical performance. Keep a spare harness in your parts warehouse for rapid field replacement.
| Parameter | Specification |
|---|---|
| OEM Number | 380501518 |
| Product Name | Rear Frame Wiring Harness (Chassis Electrical Cable) |
| Brand | XCMG (Genuine OEM) |
| Wire Gauge | 14 AWG (power/lighting), 18 AWG (signal), 12 AWG (ground) |
| Insulation Material | Cross-linked polyethylene (XLPE), 105°C rating |
| Connector Types | Deutsch DT, AMP Superseal, Metri-Pack 150 (fully sealed) |
| Number of Circuits | 22 (tail lights, turn, stop, reverse, backup alarm, sensors, aux) |
| Harness Length | 5.6 meters (18.4 ft) ± 75 mm |
| Protection | Cloth tape wrap + split corrugated loom (high-abrasion zones) |
| Temperature Range | -40°C to +105°C |
| Connector Sealing | IP67 (silicone grommets, cavity plugs, weatherpack) |
| Voltage Rating | 24V DC (suitable for 12V systems) |
| Current Capacity | 14 AWG: 25A, 18 AWG: 15A (derated for bundling) |
| Hi-Pot Test | 500V DC, 1 minute, leakage <1mA |
| Continuity Test | 100% (every circuit, pin-to-pin, with test fixture) |
| Mounting Accessories | 25 cable ties, 12 push-mount clips, 8 P-clips, 2 adhesive mounts |
| Net Weight | 2.15 kg (4.74 lbs) |
| Standards | ISO 6722, SAE J1128, RoHS, REACH, IP67 |
| 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 in the harsh under-chassis environment.
Aftermarket wiring harnesses often use PVC insulation that hardens and cracks under engine and exhaust heat, unsealed connectors that corrode within months, and incorrect wire colors that make troubleshooting impossible.
The genuine 380501518 Rear Frame 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, reverse alarms, or hydraulic valve sensors inoperative.
Each 380501518 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 on a custom fixture that simulates the grader’s electrical system, 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 frame.
Installing the 380501518 rear frame wiring harness requires basic hand tools and a multimeter. Disconnect the battery negative terminal. Raise the grader safely and support the rear frame. Remove the old harness by unplugging all connectors, cutting cable ties, and noting the routing (take photos). Lay the new harness alongside the frame, following the original path.
Connect each plug to its mating component – they are keyed to prevent misconnection. Secure the harness with the supplied clips and cable ties, keeping it away from moving suspension parts, exhaust, and sharp edges. Reconnect the battery and test all functions: tail lights, brake lights, turn signals, reverse lights, backup alarm, and any rear-mounted sensors or work lights.
Inspect the 380501518 harness every 1,000 operating hours. Check for chafing where the harness passes through frame holes, 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, rodent damage, or severe abrasion. For graders with additional aftermarket lights or sensors, use the spare circuits provided in the harness (four auxiliary wires, 18 AWG).
A 24-month field study on 35 XCMG GR2003 graders operating in a landfill and recycling center compared genuine 380501518 rear frame wiring harnesses against repaired original harnesses. Graders with OEM replacement harnesses had zero electrical faults related to the rear wiring after 5,000 hours. In contrast, graders with spliced and taped original harnesses averaged 8 faults per machine (broken wires due to flexing, corroded splices, intermittent lights) during the same period.
The OEM harnesses also reduced diagnostic time by 85% because all wire colors matched the factory schematic. The total cost of ownership using genuine harnesses was 50% lower over two years, considering reduced troubleshooting, fewer callbacks, and eliminated fire risks.
Environmental chamber tests confirmed that the 380501518 harness’s XLPE insulation resists diesel, hydraulic oil, battery acid, and road salt. The IP67 connectors were submerged in 1 meter of water for 30 minutes with no ingress. Vibration testing (10g, 10-500Hz, 100 hours per axis) 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 articulation. These characteristics make the 380501518 harness ideal for waste handling, mining, and heavy construction applications where reliability is critical.
XCMG produces the 380501518 rear frame 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 that record every crimp. Connectors are assembled using semi-automatic insertion tools that verify terminal position and retention.
The harness is laid out on a 3D pin board that replicates the exact routing on a GR2003 grader, then wrapped with cloth tape and split corrugated loom. Each finished harness undergoes a 100% continuity test on a custom test fixture that checks all 22 circuits simultaneously. Random samples are subjected to thermal shock (-40°C to +105°C, 50 cycles), salt spray (500 hours), and abrasion testing.
All genuine 380501518 harnesses are individually coiled and packed in heavy-duty plastic bags with desiccant, then placed in a corrugated cardboard box with foam padding. Bulk orders of 10 or more are palletized and stretch-wrapped. 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 380501518 rear frame wiring harness directly replaces original XCMG part numbers 380501515 and 380501516. 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, one reverse alarm). For graders with LED upgrade kits, the same harness works (LEDs draw less current). For graders with additional rear strobe beacons, side marker lights, or rear cameras, use the auxiliary wires provided (four spare circuits, 18 AWG, pre-terminated with Metri-Pack connectors).
When replacing a wiring harness, also inspect the frame 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 380501519) 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 380501518 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 380501518 rear frame wiring harness reduces total operating costs through improved reliability and faster repairs. A failed harness can cause “no tail lights” violations resulting in fines, or loss of reverse alarm leading to safety incidents. 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 95% reduction in rear lighting faults and a 75% decrease in electrical troubleshooting time.
When you choose the authentic 380501518 rear frame 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 380501518 Rear Frame Wiring Harness – engineered for the most demanding environments.
