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HomeTips & GuidesBenefits of a new car wire harness: Replacing your vehicle’s wire harness

Benefits of a new car wire harness: Replacing your vehicle’s wire harness

About Benefits of a new car wire harness, The automotive wire harness is one of the most essential parts of a car’s electrical system.

It is responsible for connecting together all the vehicle’s components: sound systems, lights, brakes, and engine. It is also responsible for providing power to the electrical components of the vehicle.

Over time, your wire harness can get damaged because of wear and tear. It can also get corroded because of exposure to moisture or other elements, resulting in electrical issues, such as short circuits.

That is why it is vital to replace your automotive wire harness. There are more benefits of a new car wire harness. Read on to learn more about them!

Table of Contents

Car wire harness understanding

Wiring harnesses are bundles of loose wires attached with connectors together in a single wrapping for a more organized wiring system. While wire harnesses and cable assemblies are widely used in various industries, the automobile industry is one of the largest consumers.

Automotive wiring harnesses are used in commercial vehicles, utility vehicles, three-wheelers, and two-wheelers. They are designed according to the geometrical and electrical requirements of automobiles and are embedded in the chassis, engine, and body of vehicles.

  • The chassis wiring harness comprises the main, rear, and front harnesses.
  • The engine wire harnesses are embedded into fuel injection systems, cruise control systems, lock-breaking systems, and speed sensors.
  • The body wire harnesses are embedded into power windows, door locks, dashboards, and interior electrical components.
Engine wire harness

Engine wire harness

What are the causes of wiring harness failure?

Generally, the common causes of wiring harness failure are open circuits, short circuits between the wires, poor contact with the connector, burn, ground, etc.

These causes of wire harness failure can be summarized under the following three aspects:

Natural damage

Any product, including a wire harness, will have a period of use. The continued use of the wiring harness can result in insulation rapture, wire aging, shortened life of the harness, and decreased mechanical strength of the harness.

Non-normal use

Too high power supply generates high heat, which leads to high temperatures, and results in the wire harness burn failure or short circuit.

Man-made reasons

During the processing and production of wiring harnesses, non-standard techniques or materials can result in poor-quality wiring harnesses. Some can not be found in the quality inspection and usually appear in the equipment after a given time after the short circuit. However, this phenomenon is currently relatively less, as harness processing manufacturers use more and more advanced equipment.

When is the vehicle’s new wire harness replacement necessary?

A vehicle has quite a few wiring harnesses. Changing an entire wire harness is often only undertaken in the event of a serious accident repair, renovation, or restoration.

This would require diagnosis by an experienced automotive technician, and electrical issues can be notoriously hard to detect and put right.

Here are the signs that your car needs a new wiring harness replacement.

  • A mysterious and constant discharge of battery with no obvious cause that may not appear to be traced down to a single point.
  • Multiple electrical systems, such as power accessories, radios, and lights, fail simultaneously, and ground and obvious master bulkhead connectors have been examined and found to be in good condition.
  • Wiring leads or bundles visibly deformed, melted or otherwise disfigured by heat.
  • A significant smell of burning plastic, possibly accompanied by white smoke, when the accessories are operated or the vehicle is started.
  • The wires are bared in multiple places, and handling them causes more bare spots.
  • The technician finds themselves chasing “ghosts” in their vehicle’s electrical system (for example, several mysterious issues that never appear to be fully resolved).
  • The automotive has been on fire, flooded, or in a severe enough crash to strain major groups or deform bulkheads and sever.
  • An unskilled individual (trying to fix the harness) has defaced or damaged a major bulkhead connector beyond repair.

Auto mechanic checking replacement wire harness

Benefits of a car new wire harness

A new automotive wire harness is an upgraded version of your current one, usually with more advanced connectors and wiring. Here are five benefits of upgrading your wiring harness system:


The wiring harness system in a vehicle is designed to be more resistant to damage and stronger than the factory wiring.

This means that it will be less likely to have electrical issues or break over time, which helps you avoid spending money and time on future repairs.

More-efficient power delivery

The electrical components in your vehicle can get power more effectively – thanks to the new upgraded wiring harness.

This is so that your wiring harness system can meet the high-performance demands of electrical components more effectively, which usually need better, more giant cables.

This leads to more reliable power delivery and quicker reaction times, enhancing your car’s overall performance.

Excellent performance in challenging environments

The auto wire harnesses include sturdy materials, which make the harness itself durable. These wire bundles are designed to carry large power loads and work remarkably perfectly in challenging environments.


The wire harness system can make the electrical system of your vehicle safer. This is because they are designed to guard against electrical shorts and other problems that can potentially cause fire or other dangers.

In addition, some wire harness systems comprise integrated circuit breakers and fuses that can guard against harm to your electrical components in case of an electrical overload.

Decreased installation times

Think of wiring your automotive system using multiple wires and installing a single component that connects multiple cables. Installing a single device is far faster than multiple devices. This lessens the chances of faulty wiring.


Custom wire harnesses and cable assemblies greatly benefit various applications and industries. The expert team at Cloom has over 30 years of experience designing and assembling harnesses of varying complexity and size.

So, if you need a custom-made wiring harness that suits your needs, we have the expertise to deliver a workable solution for you fully and on time.

I am Lillian Yang, having been a sales manager for over 10 years.

I have received many positive reviews from customers. They have praised our excellent service, on-time delivery, and high-quality cable assemblies.

For your projects, please provide cable assembly files/images/smples, etc., so that I can send you a quotation within 24 hours.

Contact me now and let’s get started on building your wire harnesses!

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