Engine wire harness

We offer smart engine wire harnesses that ensure the engine runs smoothly and quietly. Every time you use the harness, you get the best quality performances each time without issues.

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Product Introduction

Inside our engine wire harness, the wires are carefully managed and attached. The cover of the harness is built with the best quality materials to prevent bad situations. The harness has many layers that keep the inner materials safe from the other materials. The connectors are designed to be accurately attached to the other parts. The easy-to-use setup makes the harness easy to use. The harnesses are tested carefully to ensure the top-grade quality and the best service for your machinery needs. All the parts in the harness are carefully attached for long-lasting performance. With our harness, your vehicle engine gets the most exact power supply and the exact signals without any issues. The harnesses we offer you are of the best quality. First, we carefully listen to your recommendations and then we plan the whole process then we smartly start working on your project to offer you the best harnesses.

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Product Advantages

Overmolded Sensor Cable Assembly

An Overmolded Sensor Cable Assembly joins sensors and plugs together in one solid piece. A thick plastic layer covers the joint to block water, oil, and dust. This helps the wire stay clean on the inside and strong on the outside. It can bend and move, but won’t break easily. Inside, the wires stay safe, keeping signals clear and smooth. The plastic cover also makes it look neat and cuts down the need for tape. Each connector locks tightly, so it doesn’t come loose. The shape, size, and layout are designed for easy use. It’s light, easy to install, and lasts for a long time. This type of cable enables engines to communicate effectively with their sensors and remain stable in any condition.

Custom Multi-Connector Wire Harness

A Custom Multi-Connector Wire Harness is designed for engines with numerous components that require simultaneous connection. Instead of using multiple separate wires, this one consolidates all the plugs into a single, clean setup. Every plug fits its matching part, making it easy to install without mix-ups. The harness is wrapped in a soft tube that protects it from heat, rubbing, and dirt. This keeps the engine space clean, safe, and easily accessible. Every harness is tested carefully before use. It bends easily, fits well, and works perfectly. QL-Custom ensures that each harness is built to fit perfectly, function properly, and last without issues.

Sealed Circular Connector Cable Assembly

A sealed circular connector cable assembly features round connectors that twist in and seal tightly. Rubber rings prevent dust, oil, and water from entering. The metal pins carry power smoothly and don’t rust or break. These cables work great in outdoor or rough conditions. They’re tested for heat, pressure, and movement. Furthermore, these assemblies often meet international ingress protection ratings, guaranteeing their operational integrity and long-term reliability in demanding applications. The round design makes it simple to plug in and pull out. Their symmetrical circular design also prevents incorrect mating orientation. This saves time and keeps the system safe and easy to maintain.

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Material Recommendation

Wires and Cables

Wires are like the nerves of machines. They carry power and information to make things work. A wire consists of many tiny copper strands twisted together, allowing it to bend without breaking. The thickness of a wire depends on the amount of power or the number of signals it needs to carry. Thin wires are used for sensors, while thick wires carry power to significant components, such as motors. Wire ends are often coated with metal to stop rust and make good connections.

Plastic Granules

The granules are the best quality we have used in the harness material. We use the most flexible and toughest plastic materials, which makes it easy to fit. The materials can resist the harmful elements to last for a long time. The materials are tested to ensure durability and usability. The plastic can easily protect the core wire from friction and other harmful elements. These are also very secure and easy to use. Because of this material, the whole harness stays strong and offers the best service.

Corrugated Pipes

Corrugated pipes are bendy, hollow tubes that help keep many wires safe and tidy. They are made from rigid plastic with rings that encircle the entire pipe. These rings make the pipe resemble waves, allowing it to bend, twist, and move without breaking. Inside these pipes, wires stay safe from sharp metal edges, hot parts, water drops, dust, and oil leaks. The pipes come in various sizes, and people choose the right one based on the number of wires that need to fit inside. These pipes keep all the wires together in one place, preventing them from getting messy or tangled.

Automotive Connectors

Automotive connectors link the harness to each part of the engine. They come in many sizes and shapes, some are tight-sealed, while others are open for quick plug-in. Inside, strong metal pins carry power and signals. The shells keep out dust, oil, and heat. Some are overmolded for extra grip and safety. Every connector is thoroughly checked to ensure it locks tightly and remains secure. We use the correct connector for each job, big ones for power, small ones for data. Each part is designed to last long and function well, even when the engine is shaking or overheating.

Our Solution

We design and manufacture a wide range of engine wire harness systems and cable assemblies for various engines. Our engineers utilize straightforward plans and advanced tools to create every component. We test each one to ensure that power flows well, parts stay cool, and wires remain safe. We select materials that are both strong and lightweight, allowing them to withstand heat and stress without damage.

High-Density Signal Wire Harness

A high-density signal engine wire harness features many small wires packed neatly together. It’s perfect for modern engines equipped with numerous sensors. Even though the cables are close, they don’t mix or make noise. The design facilitates rapid and precise data movement. It’s small, light, and easy to fit, making it ideal for tight engine spaces. Every harness is thoroughly tested to ensure it can withstand strong signals and prolonged use without issue.

Shielded Jumper Wire Assembly

A shielded jumper wire assembly features a thin metal layer surrounding the wires to block noise. This shield keeps the signals clean and clear. It also connects to the ground, so the extra electric charge is removed safely. These wires work well near high-power systems where other cables might get noisy. They bend easily but stay strong. They help connect small parts safely and clearly, keeping every signal pure and steady.

Power Distribution Wire Assembly

A Power Distribution Wire Assembly transfers the high power to the engine and keeps the whole signal transferring process smooth. The wires are carefully made with high-quality materials, which ensure the longevity of the harness. The harness has different layers to protect the inner core of the harness from harmful elements. The connectors of the harnesses are especially built to attach to the engine parts accurately. You can easily change the harness or replace the parts for its easy-to-use feature.

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Industries and Applications

Automotive

We make wire systems for cars, buses, trucks, and electric cars. These wires enable the lights, engines, sensors, and control parts to communicate with each other, allowing the vehicle to run smoothly. The cables are robust and can withstand heat, dust, bumps, and vibration without breaking. In electric cars, they also keep the battery safe from sparks and heat. Each harness is made to stay neat and secure for many miles. We inspect every wire to ensure it stays in place and functions properly, even when the road is rough.

Heavy Equipment & Machinery

Machines like tractors, cranes, bulldozers, and forklifts operate in harsh environments full of dirt, rocks, and rain. Their wires must be highly durable so they do not break or stop the machine. We use thick cables, waterproof plugs, and tight seals that keep water and dust out. Our engine wire harnesses after rigorous vibration and impact testing, can also withstand heat, oil, and prolonged exposure to harsh conditions. They help these large machines run continuously on farms and at construction sites without stopping.

Marine & Aerospace

Boats and airplanes require strong wires that can withstand wind, rain, salt, and extreme temperatures. On boats, our wires are covered so they do not rust or get wet from the sea. On airplanes and drones, we design them to be lightweight, so they do not add weight, yet still strong enough to withstand the cold air and fast motion. We use secure layers and tight connectors to ensure everything remains operational during flights or trips at sea.

Industrial Automation

In large factories, robots and machines operate continuously to produce goods. Our engine wire harnesses enable motors, cameras, and sensors to communicate effectively with one another. They are made to handle dust, heat, and constant movement. We carefully test the full harness to ensure the quality of the harness. They are built for extreme industrial environments and long-term reliability.

Design and Quality

New Layout: First, we test how weather, movement, and force affect the wires. We use computer simulations to plan out safe and easy routes for the cables. We can avoid heat damage and bad signal quality with this.

Our staff uses special tools to make each socket and clip exactly how we want them. Each piece fits tightly, so it's easy to fix or cool down. There is a clear plan for how everything will fit together.

We customize each engine wiring harness to fit the needs of certain tasks and climates because we know that no two engines are the same. This makes sure that the harness works well no matter where it is.

Strong Materials: We use high-quality copper, safe coatings, and plastic that can withstand heat, oil, and sunlight. There will be a steady supply of electricity for many years to come.

Extra Protection: Wires are protected from damage by being wrapped and covered. The wires stay strong even in tough places because the ends are waterproof and the clamps don't rust.

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Making things and making sure they are good quality

Before we cut any cables, we check the blueprint on computers. They check that all the wires are in the right places and tell us if something might break or get too hot. We can make better harnesses faster because we find and fix mistakes early on.

Building the Prototype: We run a test to make sure it works on the machine. Before things get too tight, we make sure to check every plug, bend, and move. If we find any flaws, we make small changes until everything is perfect.

Thorough Construction: Each harness is built by smart machines and trained workers working together. The wires are cut, tied, and put together in a careful way. We look at each wire to make sure it is clean, tight, and safe.

We test each part as we build it so that we can find any possible weak spots early on. This lets us fix small problems before they turn into big ones.

Last Check: We check all the parts of the harness, such as the labels, plugs, wires, and ties, after it is done. We only send our clients people who have passed all of our tests.

Our Work on Custom Cases

Peak Efficiency Engine for Racing: We made and designed a lightweight harness for a race car. It could handle a lot of power and send signals quickly. Secure connectors kept cables from coming loose.

We made a 400V electric vehicle harness for a platform vehicle. There were parts that controlled the battery and temperature for safety.

We made a waterproof harness that works with marine diesel engines. It could handle acid, humidity, and sunlight.

We made and built a generator harness that can be used in factories and other places of business. It used thick cables to move a lot of power safely.

We made a tractor harness as a prototype for the construction industry. It was easy to change or add parts, and it passed tests for heat, vibration, and dirt.

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QL-Custom Technology : Most Reliable Partner

In QL-Custom Technology Ltd., our team does every job with joy, focus, and patience. Every one of our engine wire harnesses is hand-made with precision to guarantee a flawless fit for your vehicle.  We can make the harness fit any size engine. We check every cable, plug, and small part to make sure everything is working right. To keep your engine running well for as long as possible, we use strong and safe materials, simple designs, and a clean look. When you do business with us, you can expect fair prices, quick responses, helpful staff, and clear communication. Your engine will always be clean, strong, and ready for anything with QL-Custom. You can see how much we care about you in every harness we make.

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Customer Reviews

The harness looked perfect and worked so well! It fit easily and was quick to set up. The QL-Custom team was super kind and answered all my questions fast. All tests passed the first time. I’ll buy an engine wire harness again soon.

Alice Johnson

Our engine runs smoother and quieter now! The harness was strong, shiny, and clean. The team was kind and worked fast. I really liked their service.

Maria Gomez

Such great people to work with! They helped me step by step and made sure the harness fit perfectly. It looks strong and clean. Thank you for the great help.

Robert Smith

We needed a special harness for our machines, and QL-Custom made it just right. It worked perfectly the first time and saved us a great deal of trouble.

Priya Singh

Immaculate design, fast delivery, and perfect fit. The harness makes our engine look nice. QL-Custom really did an excellent job.

Elena Petrova

Strong, clean, and ready to use. Passed all the tests right away. The team was polite and helpful. I’m so happy with this harness and their service.

David Thompson

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