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Shop Towbars and Towing Accessories Online – Australia-Wide Delivery

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Shop Trailer Wiring Harnesses Online

Welcome to the Speedy Towbars online store, where you can shop trailer wiring harnesses and towbar wiring kits for your towing setup. Browse our range of vehicle-specific wiring harnesses, with 7-pin and 12-pin options available.

Whether you're buying a trailer wiring harness for a new towbar or replacing an existing kit, we're here to help you find the right product for your vehicle. Shop online for Australia-wide delivery, or if you're unsure what you need, give our team a call on 1300 773 339.

Speedy Towbars technician connecting trailer wiring behind a towbar
  • Australia-Wide Delivery
  • Vehicle-Specific Wiring Options
  • Towing Product Specialists

Trailer Wiring Harnesses and Towbar Wiring Kits

Save time and guesswork looking for the right towbar. Use our handy registration or VIN lookup to identify your car, or select your model from our part finder, and we'll only show you the products that fit. Simple!

Find the Right Trailer Wiring Harness for Your Vehicle

Your towing vehicle will determine the correct trailer wiring harness. Different makes, models and production years can have different wiring connections, electronic modules and installation arrangements.

We stock a range of vehicle-specific towbar wiring kits, as well as universal options for suitable applications. Browse the range and check your chosen product's compatibility against your vehicle's make, model, year and variant.

You'll also want to choose the right trailer plug configuration, whether that's a 7-pin or 12-pin setup, and check if any additional wiring components or accessories are needed.

Whether you're wiring a ute, SUV, 4WD or passenger vehicle, we're here to help you find a suitable trailer wiring harness for your towing setup.

Vehicle-specific towbar wiring harness kit with module, connectors and fitting instructions

Vehicle-Specific and Universal Trailer Wiring Kits

Vehicle-Specific Wiring Harnesses

A vehicle-specific trailer wiring harness is designed to suit particular makes and models, with connectors and components that match the vehicle's electrical system.

Some kits are plug-and-play, while others include additional electronic modules to work with the vehicle's systems. Before you buy, check the listed vehicle compatibility and what's included in the kit so you get the right one for your car.

Universal Trailer Wiring Kits

Where a universal wiring kit is suitable for your vehicle and towing setup, it can provide an alternative to a vehicle-specific harness.

Whether it's the right choice depends on your vehicle and its electrical system. Check the product specifications first, especially if your vehicle may need additional wiring protection or an electronic module.

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Not sure which way to go? Give our team a call and we'll point you in the right direction.

Shop 7-Pin and 12-Pin Trailer Wiring Harnesses

The right trailer plug makes all the difference when you hook up for the weekend. We stock both 7-pin and 12-pin wiring options, so whether you're towing a box trailer to the tip or a caravan up the coast, there's a setup to suit different towing needs.

7-pin towbar wiring harness with flat trailer socket and plug-in vehicle connector

7-Pin Trailer Wiring Harnesses

7-pin wiring is the go-to for standard trailer lighting. It covers essential functions such as indicators, brake lights and tail lights, making it a common choice for box trailers, boat trailers and other trailers with standard lighting requirements.

Browse our 7-pin wiring harnesses and towbar wiring kits. Before you buy, check the vehicle compatibility, connector type and product specifications to make sure you're getting the right fit.

12-pin flat trailer plug

12-Pin Trailer Wiring Harnesses

When your trailer or caravan needs more than the basics, 12-pin wiring provides additional connections for extra electrical functions.

Have a look through our 12-pin wiring options and check the product details carefully. You'll want the kit to match your vehicle, your trailer's plug and the way you tow.

Not sure which plug you need? Take a look at the plug on your trailer and what it needs to run, or get in touch with our team before you order. We're always happy to help.

TAG towbar wiring kit box

Plug-and-Play Trailer Wiring Harnesses

A plug-and-play trailer wiring harness can take some of the fiddly work out of connecting your trailer socket. Purpose-made connectors plug into compatible vehicle wiring, so there's often less need to cut into or modify your car's existing wiring.

Each harness is designed to suit particular vehicles. Keep in mind that not every trailer wiring kit is plug-and-play, and some vehicles need additional electronic components to get the job done properly.

Before you buy, check the fitment details, what's included in the kit and what the installation involves. If you're unsure, give us a call and we'll help you sort out the right option.

Check Compatibility Before You Order

Found a trailer wiring harness that looks right for your vehicle? Before adding it to your cart, take a moment to check these details.

A quick compatibility check can help you order the right trailer wiring kit the first time.

  • Vehicle Make, Model and Year

    Confirm the harness is listed as compatible with your vehicle.

  • Vehicle Variant

    Different body styles or specifications may have different wiring requirements.

  • 7-Pin or 12-Pin Connection

    Match the wiring and socket configuration to your trailer or caravan.

  • Electronic Modules

    Check whether an ECU or other electronic module is included or required.

  • Kit Contents

    Review what comes with the product and whether additional components are needed.

Need a hand finding the right harness? Call us on 1300 773 339 for friendly product advice.

Call 1300 773 339

Buy Trailer Wiring Harnesses Online from Speedy Towbars

We stock a wide range of trailer wiring harnesses and towbar wiring kits to suit Australian vehicles and the way Aussies tow.

Whether you're after a vehicle-specific harness, a plug-and-play kit, or a 7-pin or 12-pin connection, you can browse the range, compare specifications and order online with delivery anywhere in Australia.

Our family business has been helping people get set up for towing since 2003, and that know-how goes into every product we stock. If you'd like a second opinion before you order, we're always happy to help you pick the right wiring for your vehicle.

  • Towing Product Specialists
  • Vehicle-Specific Wiring Options
  • Australia-Wide Delivery
  • Family Business Since 2003

Frequently Asked Questions

Still have a question? Call us on 1300 773 339.

How do I know which trailer wiring harness fits my car?

Check the listed vehicle compatibility on the product page against your car's make, model, year and variant. If you're not sure or something doesn't quite line up, get in touch with our team and we'll help you find the right one.

What is the difference between a vehicle-specific and universal trailer wiring harness?

A vehicle-specific harness is designed for a particular vehicle or range of compatible models. For example, a harness might suit certain BMW 3 Series models produced between 2012 and 2014.

A universal wiring kit, on the other hand, may suit a wider range of vehicles. The right choice depends on your vehicle's electrical system and the product's compatibility requirements.

Do I need a 7-pin or 12-pin trailer wiring harness?

That comes down to what you're towing and what it needs to run. A 7-pin connection is commonly used for standard trailer lighting and associated functions, while a 12-pin connection provides additional circuits for trailers and caravans with more electrical requirements.

Check your trailer's plug configuration and electrical needs before ordering.

Are all trailer wiring harnesses plug-and-play?

No. Some harnesses use plug-and-play connectors, while others need additional wiring or electronic components. The product description will help you identify which type you're looking at, so give it a read before you buy.

Do I need an ECU with my trailer wiring harness?

Some vehicles need a dedicated electronic module as part of their towbar wiring setup. Whether yours does depends on its make, model, year and electrical system.

Check the product details, or give us a call if you'd like a hand working it out.

Can I buy trailer wiring harnesses online for delivery in Australia?

Yes. You can order trailer wiring harnesses through the Speedy Towbars online store for delivery across Australia. Browse the range, check compatibility and place your order online, or contact our team if you need help choosing.