Wiring Harnesses

Wiring Harnesses for Cars, Trucks and ATVs at Easy Life Markets

Easy Life Markets sells wiring harnesses for cars, pickups, 4x4s and quad bikes, from full engine looms to small plug-in kits for fog lamps, light bars and LED bulbs. A harness is the bundle of wires, plugs and terminals that carries power and signals between parts, so the right one has to match your vehicle's connectors, circuit and load.

If you are replacing a damaged loom, start with the part number on the old harness and the vehicle's model, year and engine. If you are adding new lights or accessories, choose a kit by its wattage, relay and fuse rating, and cable length. This page explains both routes. Our range sits inside the car electrical parts section of the main auto parts store, and the current price and availability are shown on each product page.

What a Wiring Harness Does

A wiring harness groups many wires into one organised loom. Each wire has a set gauge, colour and route. The ends carry moulded connectors that only fit one way, so the right signal reaches the right part. Tape, sleeving and clips hold the bundle in place and protect it from heat, rubbing and water.

Grouping the wires makes a car easier to build and much easier to repair. Instead of tracing loose wires one by one, a mechanic unplugs a connector and swaps a section. The cable harness article on Wikipedia covers how these looms are designed and made, if you want the background.

Modern vehicles use several harnesses. There is usually a main body loom, an engine loom, and smaller harnesses for doors, lights, seats and the dashboard. Many single parts, like a turn signal switch or a USB socket, come with their own short pigtail harness attached.

Types of Wiring Harnesses We Sell

Wiring harnesses fall into two broad groups: replacement looms that restore the factory wiring, and add-on kits that power something new. Here are the main types you will find in our range and in the wider category.

Engine Wiring Harnesses

An engine harness links the engine computer to the injectors, ignition, sensors, idle valve and other parts on the engine. It lives in a hot, oily place, so the insulation can crack and the plugs can go brittle with age. Engine swaps are another common reason to buy one. Our Civic Integra OBD1 engine harness is listed for 1992 to 1995 Honda Civic and Integra models with B16, B18 and D16 engines and uses OBD1 computer connectors.

Injector and Glow Plug Harnesses

These short looms feed one component on each cylinder. On diesels, the glow plug harness carries heavy current to the glow plugs for cold starts. The injector loom on some engines runs under the rocker cover. We sell the VW glow plug wiring harness 28971766 for Golf, Jetta and Passat, with four branch connectors, and the AMR6103 fuel injector wiring loom with a rocker cover gasket for the Land Rover Defender Td5 and Discovery.

Lighting Wiring Harnesses

Lighting harnesses let you add fog lamps, spotlights or an LED light bar without cutting into the factory wiring. A good kit includes a relay, a fuse and a switch, so the lamps draw power straight from the battery and the switch only carries a small control current. See our fog lamp wiring harness with relay, fuse and switch and the LED light bar wiring harness kit, rated 280W at 12V with a 40A relay, a 30A fuse and a main line of about 10 ft.

Decoding Harnesses and Load Resistors

When you swap a halogen bulb for an LED, the lamp draws less current. Some vehicles read that as a blown bulb and show a warning or make the indicators flash fast. A decoding harness or load resistor adds the missing load back. Our H7 LED load resistor, 50W 6 ohm, plugs in line and comes as one piece or a pair. These resistors get hot, so mount them on metal, away from plastic and other wires.

Switch and Accessory Pigtails

Some harnesses come as part of a switch or socket. The Chevrolet GMC turn signal switch for 1967 to 1972 C and K pickups has a colour-coded ribbon harness and a long flat plug. The BMW glove box USB socket harness 9237656 comes with a 150 cm cable and a 4-pin connector.

Full Harness Kits for ATVs and Quads

Small off-road machines often need the whole electrical system replaced at once, especially after a rebuild. Our 150-250cc quad wiring harness kit includes the main loom plus a stator, CDI, ignition coil, rectifier, solenoid, key switch and handlebar switches for 150cc, 200cc and 250cc push rod engines.

We also list an aluminium spark plug cover in this section. It is not a loom itself. It is a trim plate that bolts over the spark plug wells on a four-cylinder engine, where the ignition harness runs.

Comparing Wiring Harness Types

This table sums up what each type is for and what to check before you order.

How to Choose the Right Wiring Harness

Choosing wiring harnesses is mostly about matching. A harness that is close but not exact can leave one plug short or put a signal on the wrong pin. Work through these checks.

1. Find the part number. Look for a label or printed number on the old loom, often near a main connector. Compare it with the numbers on the product page.
2. Confirm the vehicle details. Note the make, model, year, engine size and engine code. Engine harnesses often change between model years, even on the same car.
3. Count the connectors. Check the number of branches and the shape of each plug. A four-cylinder glow plug loom needs four branches. Five plugs suggest a five-cylinder engine.
4. Check the pin count. A 4-pin plug will not replace a 6-pin plug, even if they look alike.
5. Look at the ECU connector. On engine looms, the computer plug decides compatibility. OBD1 and OBD2 Honda connectors, for example, are different.
6. Compare photos side by side. Lay your old harness next to our product photos and check the branch lengths and plug positions.

If anything is unclear, send us your part number and vehicle details through the contact page before you order. We would rather check with you than have you wait for a part that does not fit.

Specifications to Check on Add-On Harness Kits

For lighting and accessory kits, the specs matter more than the car model. These are the numbers to read.

• System voltage. Most cars and light trucks use 12V. Some heavy trucks use 24V. Buy a kit rated for your system.
• Maximum load in watts. Add up the wattage of every lamp you will connect. Keep the total under the kit's rating with some room to spare.
• Relay rating in amps. The relay must handle the current your lamps draw. Divide total watts by system volts to estimate amps. 200W on 12V is about 17A.
• Fuse rating. The fuse protects the wire. Never fit a bigger fuse than the kit specifies.
• Cable length. Measure from the battery to the furthest lamp, following the route you will actually use, then add slack for bends.
• Switch type. Check whether the switch is a rocker, push button or toggle, and whether it has an indicator light.
• Connector type at the lamp. Many kits use common two-pin plugs. Make sure your lamps match or plan to fit new terminals.

How to Tell If a Wiring Harness Is Damaged

Faulty wiring causes faults that come and go, which makes them hard to find. Look for these signs:

• Warning lights that appear and vanish, often over bumps.
• Misfires, rough running or no start with no clear cause.
• Lights or accessories that flicker or work only sometimes.
• Melted or cracked insulation, green corrosion on terminals, or a burning smell.
• Chewed wires, which is common when rodents nest in an engine bay.
• Fault codes for several unrelated sensors at once, which often points to a shared wire or ground.

Before you replace a loom, check the simple things. Clean and tighten the battery terminals and earth straps. Unplug suspect connectors, look for bent pins or corrosion, then refit them firmly. If a single wire is broken, a careful repair may be enough. When damage is spread along the loom, a new harness is often quicker and more reliable.

Fitting Tips for Wiring Harnesses

Many harness jobs are within reach of a careful home mechanic. Larger engine looms take time and patience. These tips apply to most jobs.

• Disconnect the battery first. Remove the negative terminal before you unplug or cut anything.
• Take photos before you start. Photograph every connector and the route of the old loom. Label plugs with masking tape if needed.
• Follow the factory route. Keep the new harness clear of exhaust parts, moving belts, the steering shaft and sharp edges.
• Use the clips and grommets. Secure the loom at each mounting point and pass it through bulkheads using grommets, not bare holes.
• Push connectors until they click. A half-seated plug is one of the most common causes of faults after a repair.
• Mount relays and fuses where you can reach them. Keep them dry and away from direct heat.
• Test before you tidy up. Reconnect the battery and check every function before you refit covers and trim.

If you are not confident around car electrics, have a qualified auto electrician fit the harness. A wiring fault can damage control units or cause a fire, so it is worth doing properly.

Common Mistakes When Buying Wiring Harnesses

Most returns on wiring harnesses come down to a few avoidable errors.

• Buying by model name only, without checking the year or engine code.
• Assuming all plugs with the same shape have the same pin layout.
• Choosing a lighting kit rated below the total wattage of the lamps.
• Fitting a larger fuse to stop a fuse from blowing. That hides a fault and puts the wire at risk.
• Mounting a load resistor against plastic or other wires, where its heat can cause damage.
• Skipping a clean earth connection. Many lighting problems come from a poor ground, not the harness.

Caring for Your Vehicle's Wiring

A harness can last the life of the vehicle if it is protected. Keep the engine bay reasonably clean, as oil and dirt soften insulation over time. Check that clips and covers are in place after any repair. Use a little dielectric grease on connectors that see water, such as fog lamp plugs. If you park where rodents are active, check the engine bay from time to time for nesting material or chewed wires.

When you add accessories, run their power through a proper relay kit instead of tapping into existing circuits. This keeps extra load off the factory wiring and the switches inside the car.

Who Our Wiring Harnesses Suit

Our range of wiring harnesses is aimed at a few kinds of customer:

• Home mechanics fixing a known wiring fault on a specific car or truck.
• Restorers of classic pickups and older Japanese cars, where original looms are tired or missing.
• Engine swappers who need a loom that suits the engine and computer they are fitting.
• Off-road drivers adding fog lamps, spotlights or light bars.
• ATV and quad owners rebuilding small machines from the frame up.
• Workshops that want parts listed by part number and clear photos.

We will keep adding wiring harnesses for more makes and models. Check this page again if you do not see your part today.

Related Electrical and Auto Parts

Wiring work often goes hand in hand with other electrical parts. Browse these sections for the rest of the job:

• Sensors for oxygen, ABS, camshaft and crankshaft sensors that plug into the engine and chassis looms.
• Ignition coils, which connect to the ignition side of the engine harness.
• Alternators and starters for the charging and starting circuits.
• Jump starters and battery accessories for testing and powering the system.
• Lighting, where our fog lamp and light bar kits also appear.

Frequently Asked Questions

What is the difference between a wiring harness and a wiring loom?

They mean the same thing. "Loom" is more common in British English and "harness" in American English. Both describe a bundle of wires and connectors made for one job.

How do I know which wiring harness fits my car?

Match the part number from your old harness, then confirm the make, model, year and engine. Compare the plug shapes and pin counts with our photos. If you are unsure, contact us with your details.

Can I fit a fog lamp harness to any car?

A general fog lamp kit with its own relay, fuse and switch can be fitted to most 12V vehicles. You still need to check the lamp wattage, the cable length and where you can mount the switch.

Why do my indicators flash fast after fitting LED bulbs?

The LEDs draw less current, so the flasher or body computer thinks a bulb has failed. A load resistor or decoding harness in line with each LED usually fixes this.

Can I repair a damaged harness instead of replacing it?

Yes, if the damage is limited to one or two wires. Solder the joint, seal it with heat-shrink and secure the loom. Widespread heat or rodent damage usually means a replacement is the better choice.

Do I need special tools to fit wiring harnesses?

Most jobs need basic hand tools, a test light or multimeter, cable ties and electrical tape. Our tools and equipment section has useful extras.

What if the harness does not fit my vehicle?

Please read our return and refund policy before you order, and keep the part unfitted and in its packaging if you think it is wrong. Our FAQ page covers other common questions.

How is my order shipped?

Shipping methods and costs are set out on our shipping policy page.

Shop Wiring Harnesses with Easy Life Markets

Easy Life Markets lists every harness with its part numbers, the vehicles the supplier names, and clear photos of the plugs, so you can check the match before you buy. Pick your part, compare it with your old loom, and order with confidence. For more parts for the same vehicle, head back to electrical parts or the full auto parts range.