The COGENG 0001044 and 0001049 are premium direct OEM replacement wiring harnesses specifically engineered for Hitachi EX100-2, EX120-2, and EX200-2 excavators. These comprehensive wiring assemblies connect and power critical machine components including the main controller (ECU/VCU), engine systems, cab electronics, hydraulic controls, lighting, and safety systems. Manufactured to meet or exceed original Hitachi specifications, this harness set ensures reliable electrical performance, optimal signal integrity, and long service life in demanding construction and excavation applications.
| Category | Specification |
|---|---|
| COGENG Set Number | CG-HIT-SET-006 |
| OEM Part Numbers | 0001044 (Primary Main Harness) 0001049 (Secondary Main Harness) |
| Harness Type | Matched Main Harness Set |
| Wire Standard | Oil & Abrasion Resistant |
| Connector Type | OEM Specification |
| Key Feature | Precisely Matched Harness Pair |
| Quality Assurance | 100% Electrically Tested |
| Warranty | 24-Month Limited Warranty |
| Parameter | Engine Bay Section | Cab/Chassis Section |
|---|---|---|
| Temperature Range | -40°C to +125°C | -40°C to +105°C |
| Ingress Protection | IP67 / IP69K | IP65 / IP67 |
| Vibration Resistance | 15G @ 50-1000Hz | 10G @ 50-500Hz |
| UV Resistance | 500+ hours | 500+ hours |
| Chemical Resistance | Diesel, oil, coolant, hydraulic fluid | Oil, hydraulic fluid |
| Salt Spray Resistance | 500+ hours | 500+ hours |
| Parameter | Specification |
|---|---|
| Model | Hitachi EX100-2 Excavator |
| Type | 10-ton Crawler Excavator |
| Series | Dash 2 |
| Engine | Isuzu 4BD1T |
| Operating Weight | 10,000 - 11,000 kg |
| Parameter | Specification |
|---|---|
| Model | Hitachi EX120-2 Excavator |
| Type | 12-ton Crawler Excavator |
| Series | Dash 2 |
| Engine | Isuzu 4BD1T / 6BD1T |
| Operating Weight | 12,000 - 13,000 kg |
| Parameter | Specification |
|---|---|
| Model | Hitachi EX200-2 Excavator |
| Type | 20-ton Crawler Excavator |
| Series | Dash 2 |
| Engine | Isuzu 6BD1T |
| Operating Weight | 19,000 - 21,000 kg |
Note: Verify compatibility with your equipment model and serial number before ordering. Contact COGENG with your machine details for exact application verification.
| Circuit Group | Components | Wire Specification |
|---|---|---|
| Main Power Distribution | Battery, alternator, main fuse box, starter relay | 4-6 AWG (battery) / 8-10 AWG (alternator) |
| Engine Control (ECU) | ECU, crank sensor, cam sensor, injectors | Shielded 18-20 AWG + 14 AWG |
| Fuel System | Fuel pump, supply pump, pressure sensors | 16-18 AWG |
| Main Controller Interface | VCU communication, CAN bus | Shielded twisted pair |
| Interface Connector | To harness 0001049 | Sealed connector |
| Connector Type | Location | Pins | Sealing |
|---|---|---|---|
| Hitachi OEM | Engine ECU | 48-60 pins | IP67 |
| Deutsch DT | Engine bay | 2-12 pins | IP67 |
| AMP/Tyco | Alternator, starter | 2-pin + ring terminals | IP65 |
| Interface Connector | Cab to chassis | 24-36 pins | IP67 |
| Circuit Group | Components | Wire Specification |
|---|---|---|
| Cab Power | Fuse panel, ignition switch, cab lights, HVAC | 14-16 AWG |
| Instrumentation | Display unit, gauges, warning lights | 18-20 AWG |
| Hydraulic Control | Main pump solenoids, control valve, pressure sensors | 16-18 AWG (shielded sensors) |
| Swing System | Swing motor brake solenoid, swing sensors | 16-18 AWG |
| Travel System | Travel motor brake solenoids (L/R), travel sensors | 16-18 AWG |
| Joystick Control | Pilot control signals (L/R joysticks) | Shielded 20 AWG |
| Lighting System | Work lights, beacon, tail lights | 14-16 AWG |
| Safety Systems | Emergency stop, seat switch, seatbelt, reverse alarm | 18-20 AWG |
| Interface Connector | To harness 0001044 | 24-36 pin sealed |
| Connector Type | Location | Pins | Sealing |
|---|---|---|---|
| Hitachi OEM | Main controller (VCU) | 24-48 pins | IP65 |
| Deutsch DT/DTP | Hydraulic valve, swing motor, travel motors | 2-12 pins | IP67/IP68 |
| Deutsch DTM | Sensors | 2-6 pins | IP67 |
| AMP/Tyco | Cab, chassis | 6-24 pins | IP65 |
| Interface Connector | Chassis to cab | 24-36 pins | IP67 |
| NO | Number | Name | Qty |
| 01 | 0001044 | HARNESS | 1 |
| 01 | 0001049 | HARNESS | 1 |
| 63 | J950010 | NUT | 5 |
| 64 | A590910 | WASHER | 5 |
| 70 | J011020 | BOLT | 21 |
| 71 | 4055311 | CLIP | 4 |
| 73 | 4190274 | CLIP | 6 |
| 74 | 4190273 | CLIP | 1 |
| 75 | 4190275 | CLIP | 6 |
| 77 | 4190282 | CLIP | 5 |
| 78 | 4190253 | CLIP | 1 |
| 80 | 4190291 | CLIP | 2 |
| 85 | 4000860 | CLIP | 1 |
| 86 | ]010616 | BOLT | 1 |
Disconnect battery negative terminal
Take photos of old harness connections (label connectors if not color‑coded)
Remove floor mats, right console cover, dashboard panel, instrument panel
0001044 (chassis harness): Disconnect from battery, starter, alternator, engine sensors, lights. Remove from clips/tie wraps. Pull through bulkhead grommet.
0001049 (cab harness): Disconnect monitor, key switch, joysticks, switches, wiper, HVAC. Remove from cab.
Lay harness in cab along original routing
Connect: monitor panel, key switch, joysticks, HVAC, wiper, cab light
Secure with zip ties (OEM locations)
Leave main bulkhead connector unplugged until chassis harness installed
Route from battery box forward to engine compartment
Connect: battery cables (+ and -), starter (S terminal), alternator (B, IG, L)
Connect engine sensors: oil pressure, water temp
Install lights (headlights, working lights, travel alarm)
Push main bulkhead connector through firewall grommet
Plug chassis harness (0001044) main connector into cab harness (0001049) main connector
Ensure locking tab clicks
Engine ground: Braided strap or wire from engine block to frame (clean connection)
Battery ground: From battery negative to frame
Cab ground: From cab harness to cab chassis (near right console)
Reconnect battery negative
Key OFF – check for sparks (indicates short)
Key ON (engine OFF) – monitor panel lights should illuminate, gauges move
Start engine – check alternator charging (voltage ~14V), oil pressure light off
Test all functions: lights, wiper, HVAC, horn, travel alarm, swing brake (if equipped)
Q: What Hitachi models use the 0001044 and 0001049 wiring harnesses?
A: These main wiring harnesses are commonly found on various Hitachi EX and ZX series excavators. Please verify the part numbers stamped on your original harness tags or consult your machine's parts manual to confirm exact fitment before ordering.
Q: Why choose COGENG replacement harnesses over repairing old ones?
A: Aging wiring harnesses suffer from brittle insulation, internal wire corrosion, and connector degradation that patch repairs cannot fully resolve. COGENG OEM-quality harnesses provide a permanent solution with durable construction that restores reliable electrical performance and prevents intermittent faults.
Q: Are these harnesses plug-and-play replacements?
A: Yes, COGENG harnesses are manufactured to OEM specifications with correct connector types, pin assignments, and wire gauges. They are designed as direct-fit replacements requiring no wire splicing or modifications when installed on compatible models.
A. When will get the items after I place order?
Q. Once your payment is confirmed,? ?we will arrange the goods within 1~4 days; if not in stock, we will inform you before placing the order?
A. If I only know the excavator model, but can not offer parts No.,what should I do ?
Q. If possible, you can send us pictures of old products, nameplate or the size for reference.
A. How can you guarantee the quality??
Q. We will 100% test the goods before delivery. We also support video inspection.
A. How long will it take to delivery to my address?
Q. The normal delivery time is 3-7 days, depending on which country you are in.?
A : Which delivery method will you choose?
Q : By sea, air or express(DHL,Fedex,TNT, UPS, EMS etc.)，Sometimes we will arrange as the customer's demand.
A: What's package? Can you give me the package according my requirement??
Q. We usually packed by standard exported box or carton. And yes we can pack as per your requirement.
A: Can the price be cheaper?
Q: Of course, you will be offered a good discount for a big amount.
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