7 Pin Universal Electrics kit
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 your 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.
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.