| Specification Category | Technical Specifications |
|---|---|
| Compatible Applications | JCB Excavator Models (Compatible with 721-10938/721-10939 applications) |
| COGENG Part Number | CG-JCB-PRO-MH11 |
| Replaces OEM Part Numbers | 721-10938, 721-10939 (All variants and numbering formats) |
| Product Name | Pro Series Main Wiring Harness Assembly |
| Application Scope | Complete excavator electrical system integration |
| Wire Specifications | Cross-linked polyethylene insulation (125°C rating), oil/fuel/abrasion resistant |
| Connector System | IP68 rated sealed connectors, OEM-equivalent specifications |
| Quality Assurance | 10-stage testing protocol including vibration endurance and thermal cycle testing |
| Warranty Coverage | 4,000-hour professional warranty |
The wiring harnesses are crucial components that provide electrical connections for various systems and components within the JCB equipment. They ensure proper communication and power distribution between different parts of the machine.
Please note that while I can provide general information about wiring harnesses, specific details such as wire colors, pin configurations, and exact applications may vary. It's always recommended to consult the official documentation or contact JCB or an authorized dealer for accurate and up-to-date information regarding the wiring harnesses for your specific JCB models.
| NO | Number | Name | Qty |
| 1 | 721/10935 | Harness chassis see | 1 |
| 2 | 721/10936 | Harness cab panel | 1 |
| 2 | 721/10970 | Harness cab panel | 1 |
| 2 | 721/11306 | Harness cab panel | 1 |
| 2 | 721/10982 | Harness panel cabless | 1 |
| 2A | 716/15400 | Plug Diode | 1 |
| 3 | 721/10965 | Harness cab roof ROW | 1 |
| 3 | 721/11154 | Harness cab roof USA | 1 |
| 4 | 721/10938 | Harness manual gearbox | 1 |
| 4 | 721/10939 | Harness powershift 4 gearbox | 1 |
| 4 | 721/10941 | Harness powershift gearbox | 1 |
| 5 | 721/10947 | Harness rear cab centremount | 1 |
| 6 | 721/10945 | Harness rear lights ROW centremount | 1 |
| 7 | 721/10974 | Harness auxiliary Hammer Jaw | 1 |
| 7 | 721/10974 | Harness auxiliary Hammer Jaw | 1 |
| 7 | 721/11177 | Harness auxiliary hammer/jaw | 1 |
| 7 | 721/10977 | Harness Quickhitch dedicated | 1 |
| 8 | 721/10983 | Harness headlights Cabless build | 1 |
| 9 | 721/10942 | Harness cab link | 1 |
| 9 | 721/10943 | Harness cab link auto | 1 |
| 9 | 721/10971 | Harness link | 1 |
| 10 | 721/10967 | Harness steer mode AWS AWS | 1 |
| 10 | 721/10968 | Harness steer mode no crab | 1 |
| 12 | 721/10976 | Harness powertools | 1 |
| 14 | 721/10580 | Plug link | 1 |
| 14 | 721/10581 | Plug link | 1 |
| 14 | 721/10874 | Plug link | 1 |
| 15 | 721/10872 | Plug link | 1 |
| 16 | 721/10940 | Harness front console p/shift &manual | 1 |
| 16 | 721/10972 | Harness front console powershift &manual | 1 |
| 16 | 721/10990 | Harness front steer console | 1 |
| 16 | 721/10937 | Harness steer console autoshift | 1 |
| 17 | 721/10569 | Harness solenoid,Hammer Jaw C O Valve | 1 |
| 18 | 721/11047 | Harness ESOS link | 1 |
| 19 | 721/11150 | Harness German link | 1 |
| 19A | 716/20500 | Plug 5 diode 2WS | 1 |
| 20 | 721/11048 | Lead fuel sender link | 1 |
| 21 | 721/11049 | Harness brake light switch | 1 |
| 22 | 721/11050 | Harness interior lamp &speakers | 1 |
| 23 | 721/10987 | Harness panel link shovel lamps | 1 |
| 24 | 721/11046 | Harness lamps shovel mounted | 1 |
| 25 | 718/20119 | Cable earth link 625mm long | 1 |
| 26 | 1315/0405Z | Setscrew M10 x 20 mm | 1 |
| 27 | 1420/0008Z | Washer (M10) | 2 |
Complete System Power Down: Execute full shutdown procedure including primary and secondary battery disconnection, main power isolation, and verified capacitor discharge waiting period (minimum 15 minutes)
Comprehensive Pre-Installation Documentation: Create detailed photographic and video records of existing harness routing, connector orientations, and securing point locations
Professional Connector Handling: Use appropriate tools to release locking mechanisms - never pull on wires. Identify and follow connector numbering system for correct reinstallation
Systematic Component Inspection: Conduct thorough audit of all sensors, control units, and mating connectors for signs of damage, corrosion, or pin deformation before installation
Precision Routing Implementation: Follow exact factory routing path, ensuring proper seating in all clamps, guides, and protective conduits while maintaining safe clearance from moving components
Professional Connection Verification: Implement step-by-step connection process using provided checklist. Verify all connectors are fully seated with audible locking confirmation
Comprehensive System Validation: Perform progressive power-up sequence and complete functional testing of all electrical systems, including diagnostic code verification and operational calibration
