Adapters let an older trailer work with a newer tow bar and the other way round. A 7-pin plug carries the basic lighting functions, a 13-pin plug adds the extra circuits a caravan or a newer trailer expects. This range covers both, and the parts that go between them.
Choosing between an adapter and a new plug
An adapter is the quicker fix when the trailer is borrowed or the mismatch is occasional. Fitting the right plug is the better answer when the trailer is yours and the tow vehicle is not changing. Check which way the mismatch runs before ordering, since a 13 to 7 adapter and a 7 to 13 adapter are not interchangeable.
Related ranges
Spiral and extension cables are in trailer cables. For sockets on the vehicle side see electrical sockets and electrical plugs. To check a connection works, see light testers.
