Do I need a towbar bypass relay?

A bypass relay is necessary if you are fitting a universal wiring system in a modern car, as they work differently from older vehicles. To protect your vehicle’s electrical system from damage, we would always recommend having vehicle specific towbar electrics fitted by a professional.

Is there anyway to check Electrics on a tow bar?

You can test it yourself with your multimeter & a wiring diagram for the sockets(just google ’12n/12s wiring’) On 12n socket touch neg. probe of meter onto socket earth pole the check each pole for power at the appropriate point ie brake lights & indicators on/off & rear lights on all the time.

Are tow bar electrics fused?

There should be 3 fuses in the battery compartment to supply the 13-pin towing electrics for a caravan, not one. One fuse is for the caravan lights, one for the fridge, and one for the caravan battery charging/ATC.

What does a tow bar ECU do?

A Bypass ECU (Intelligent ECU) is simply attached to the vehicle’s rear light wiring harness and takes a signal from the harness telling the Bypass ECU when the vehicle is indicating, braking or the lights are turned on. This type of ECU draws little current and therefore causes no issues for the Can-bus system.

How does a 7-way bypass relay work?

The 7-way bypass is a miniature bank of 7 of these electrically operated switches. When fitted it has a main 12 volt power supply into the 7-way unit, and 7 output wires leading to the towbar’s electric socket. Also into the relay are 7 “switching” wires which connect to the vehicle’s lighting circuits.

What is the difference between 12N and 12s?

This is a grey or white socket has a different pin configuration to the 7 Pin 12N black socket. The 12S socket provides power to operate the interior functions of the caravan such as the interior lights, run the fridge and charge the battery whilst you are towing.

How do I check my towing electrics?

Signal a turn or press the brakes or turn on your lights and connect the red probe of the voltmeter to the equivalent pin of the tow bar socket. The voltmeter should read around 12 volts, maybe more, depending on your car battery.

What is tow bar coding?

Towbar Vehicle Coding When these are fitted some vehicles are required to be coded, this means that the vehicle understands that the vehicle will be towing and thus activate the necessary function on the car.

Do you need a certificate for a tow bar?

However there is no requirement for the towbar to be installed professionally, there is no qualification required under the regulations. Provided the towbar is installed in accordance with the manufacturer’s instructions, it is perfectly permissible to fit your own towbar to your car.

Is it legal to fit your own towbar?

Not only is fitting it by yourself a huge safety concern, but you could also be invalidating the towbar or car manufacturer’s warranty by doing the work yourself. Unless you are a mechanic or towbar fitter, we would always advise that your towbar is installed by a professional so you can be sure it is safe and secure.

What’s the difference between 7 pin and 13 pin?

The difference between a 7-pin and 13-pin plug is that a 13-pin plug has more functions. A 7-pin plug only supplies in basic lighting, such as blinkers and brake lights. Perfect for bike carriers. The additional pins in the 13-pin plug are used for the reversing lights and the rear mist light, among other things.

Does the Ford connect tow bar need a bypass relay?

All tow bars for the Ford Connect will require a bypass relay if universal electrics are fitted. A bypass relay works by powering what it is you are towing through transferring power straight from the battery instead of taking too much current away from your vehicle.

Does the Ford Transit Courier have a bypass relay?

All tow bars for the Ford Transit Courier models will require a bypass relay if universal electrics are fitted. A bypass relay works by powering what it is you are towing through transferring power straight from the battery instead of taking too much current away from your vehicle.

Can a tow bar be fitted to a Ford Transit Custom?

It is recommended that all tow bars fitted to a Ford Transit Custom vehicle are done so with a dedicated electrics kit, rather than a universal electrics kit. A dedicated electrics kit not only ensures all modern features such as; trailer stability and parking sensors are functional but also helps to keep your vehicle’s warranty unaffected.

Does the Ford Transit Courier have a towing capacity?

The Ford Transit Courier was first introduced in 2014 by the American manufacturer as a leisure activity vehicle, offering great towing abilities. We will cover the towing specifics of this model below.