Universal Bypass

Universal Bypass wiring is a simple way of connecting your tow bar wiring to your car whilst protecting the cars electrical systems.

This system “bypasses” the cars complex electrical systems and only connects to the vehicles lighting functions allowing the trailer lights to work.

If you require your cars many safety features to work then this is not the system for you as the tow bar wiring is isolated from the vehicles wiring and the car will not know it is towing. However, if you have an older car without these features or do not require any of the safety features to work then the bypass system when properly installed can be a simple cost effective solution.

Please contact us to discuss in further details, our technicians are on hand to assist you today.

Dedicated Vehicle Specific Wiring


Dedicated vehicle specific kits are designed to fit to the cars electrical systems as the manufacturer intended, incorporating many safety features that modern cars have today.

Such as trailer stability control or electronic stability program. Many dedicated kits have to be coded or programmed to allow these functions to operate, these additional benefits can be coded into your vehicle by your vehicle main dealer.

With car electronics getting ever more complex it is important that you choose the best way for your tow bar and wiring installation.

Most of the wiring kits that we use are manufacturers original equipment however these only carry the manufacturers 12 month warranty, as aposed to the universal bypass which has a 3 year warranty.

Single Electrics - 12(N)

Single Electrics, also known as 12(N), are fitted as standard. They provide power from the towbar to the lights on a trailer or caravan.

If you're only going to be towing a trailer this is all you need. You can tow a caravan using only single electrics , but the interior functions of the caravan, such as the fridge , wouldn't have power to them.

Even if you will only be using the towbar for a cycle carrier we recommend that you still have a single electric socket fitted so that you can power a light board over the bikes

Please contact us to discuss in further details, our technicians are on hand to assist you today.

Twin Electrics - 12(S)

Twin Electrics, or 12(S), are fitted in addidtion to single electrics if you're going to use your towbar for towing a caravan built prior to 2008.

The extra grey socket provides power to operate the interior functions of the caravan such as the interior lights, run the fridge and charge the battery while you are towing.

This type of socket has been replaced on caravans built after 2008 in the UK. New caravans now use the 13 pin standard socket shown to the righ

Please contact us to discuss in further details, our technicians are on hand to assist you today.

13 pin Electrics

13 pin Electrics have been standard in most other European countries for some time.

This is replacing the 2 separate socket currently used in the UK. The 13 pin socket is essentially the two 7 pin sockets merged in to one.

All caravans manufactured in the UK from 2008 are fitted with an ISO 13 pin connector as standard. This system uses one socket with 13 pins inside, instead of the traditional two separate 7 pin sockets.

13 pin sockets are also used on some vehicles especially with detachable towbars when there isn't enough room to mount two separate sockets behind the bumper.

Contact Details

Please feel free to contact us on the number most relevant to your location below - our team are on hand to help you in any way that they can.

  • Cheltenham - 01242 222 826

  • Cirencester - 01285 238 044

  • Cotswolds - 01242 582 334

  • Cotswolds - 01608 238 411

  • Evesham - 01386 300 464

  • Gloucester - 01452 690 711

  • Forest of Dean - 01594 369007

  • Malvern - 01684 439 701

  • Stroud - 01453 297 001

  • Tewkesbury - 01684 439 701

  • info@cotswoldltd.co.uk

  • www.cotswoldltd.co.uk