COGENG 721/11319 721-11319 72111319 Universal Main Wiring Harness | Direct OEM Replacement for JCB 3CX 4CX 5C Backhoe Loaders & JS Excavators

PRODUCT IDENTIFICATION

CROSS REFERENCE GUIDE

TECHNICAL SPECIFICATIONS

Electrical Specifications

Material Construction

Environmental Ratings

COMPATIBLE JCB EQUIPMENT

Backhoe Loaders

JS Excavators

Universal Application Notes

Note: This is a universal main harness that covers multiple JCB models. Some minor pinout variations may exist depending on machine year and options (air conditioning, auxiliary hydraulics, ride control, etc.). Contact COGENG with your machine serial number for exact compatibility confirmation and any required adapter notes.

Decompose pictures

Parts list

Installation decomposition diagram

1. Complete System Shutdown: Park on level ground, lower attachments, engage parking brake

2. Power Disconnection: Disconnect negative battery terminal first, then positive

3. Capacitor Discharge: Wait 15 minutes for ECU and system capacitors to fully discharge

Installation Procedure:

1. Documentation: Photograph original harness routing and label all connectors

2. Systematic Removal: Use proper terminal tools - never pull on wires

3. Verification: Compare COGENG harness to original for exact match

4. Routing: Follow original paths exactly, maintaining clearance from hot/moving parts

5. Connection: Secure all connectors until positive click is heard

6. Testing: Reconnect power, initialize system, and perform full functional testing

Post-Installation Verification:

• Complete diagnostic system scan

• Verify all sensor readings and communication networks

• Test all operational functions through complete cycles

• Inspect for proper grounding and circuit protection
  Frequently Asked Questions

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.

A: Why should I choose to buy from you?
Q:Our advantages: 100% quality assurance, develop and manufature follow original ones;Quick response within 24 hours; Small order allowed;Reasonable stock and timely delivery;Neutral packing, customized packing are allowed. Positive customer feedback from abroad market;Excellent after-sales service.
A : Which payment terms can you accept?
Q : Paypal. Western Union, Bank Transfer, T/T...

Contact COGENG

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