TOW BAR FITTING

Tow bar fitting is the process of installing a tow bar onto a vehicle so it can safely tow trailers, caravans, bike racks, or other attachments. It involves securely mounting a metal frame to the car’s chassis and connecting electrical systems so that lights and indicators on the trailer work correctly.

Flange tow bar

Flange tow bars (sometimes called bolt-on ball tow bars) are a traditional style commonly used in the UK. They feature a tow ball mounted onto a flange plate, which is then securely fixed to the underside of the vehicle. They’re a practical, durable option and widely used for general towing and accessory mounting.

Swan neck tow bar

A swan neck tow bar gets its name from its curved design, which resembles the neck of a swan. It attaches directly underneath the vehicle, with the neck curving upwards to form the towing point. This style is typically more streamlined and discreet and is less likely to interfere with parking or reversing sensors.

Detachable vs fixed tow bars

Tow bars generally come in two main types: fixed or detachable. Fixed tow bars remain permanently attached to the vehicle, while detachable tow bars can be removed when not in use. Detachable systems usually feature a quick-release mechanism, making them easy to take on and off, and a popular choice for drivers who want a cleaner look when the tow bar isn’t needed.

Tow bar fitting typically involves:

• Checking vehicle compatibility
• Removing parts of the rear bumper or trim (if required)
• Attaching the tow bar to the vehicle’s chassis mounting points
• Installing the electrical wiring system
• Testing all connections, including trailer lights and indicators

Modern vehicles may also require software coding to ensure onboard systems recognise the tow bar.

Before attending an appointment with a tow bar fitting specialist, it can help to:

• Clear out the boot for access to internal panels
• Remove any rear accessories or bike racks
• Check your vehicle handbook for towing capacity
• Ensure your electrics (battery and lighting system) are functioning properly
• Inform the technician of any modifications already made to the vehicle

Most professional installations take between 2 to 6 hours, depending on the vehicle and tow bar type. More complex installations, such as those requiring bumper removal or advanced electrical coding, may take longer.

Costs vary depending on the tow bar type, vehicle, and electrical system required. As a guide in the UK:

• Basic installation: £200–£400
• Mid-range detachable systems: £400–£700
• Premium retractable systems: £700–£1,200+

For an accurate quote, it’s best to contact a specialist tow bar fitting provider.

While it’s possible for experienced individuals, tow bar fitting is usually best left to professionals. Incorrect installation can impact safety, damage your vehicle, or affect insurance cover.

In the UK:

• Tow bars must be securely fitted and meet EU/UK standards (e.g. EC94/20 or UNECE Regulation 55)
• The vehicle must not exceed its towing capacity
• Number plates and lights must remain clearly visible when towing
• A trailer must have working brake lights, indicators, and reflectors
• Towing weights must comply with the manufacturer’s guidelines

A qualified installer will typically ensure these standards are met.

Tow bar electrics connect your vehicle's lighting system to the trailer. There are two main types:

7-pin electrics

Used for basic trailers, providing essential lighting functions like indicators, brake lights, and tail lights.

13-pin electrics

Used for caravans and more advanced trailers. They support additional functions such as reverse lights, fridge power, and battery charging.

Modern vehicles often require vehicle-specific wiring kits and may need electronic coding to ensure compatibility.

Now you know what's involved in tow bar fitting, the next step is to speak to a trusted specialist who can recommend the right tow bar and installation for your vehicle.