13 Pin Plug
13 Pin Plug. A 13 pin plug is used when towing objects, such as your caravan or an advanced trailer, boat trailer or horsebox. This plugged gives you all the light functions including reverse, it can also supply the permanent and fridge feeds. This plugs into the 13 pin socket mounted on the tow bar. Should you have a different plug or socket there are various adaptors that can be used so the trailer can be attached.