Product details
Asc 7-pin trailer and caravan towbar socket (12N)
There’s nothing worse than setting off for the weekend only to find the trailer lights aren’t working — hazards flashing, brake lights dead and a bit of panic before you leave. The ASC 12N 7-pin towbar socket is a dead-simple, sensible fix. It replaces tired, corroded or faulty plastic sockets with the standard 7-pin 12N connection used on most trailers and caravans in the UK.
Key features
- Standard 12N, 7-pin configuration – the common lighting-only socket for trailers and caravans.
- Weather-resistant plastic body to keep water and muck out of the contacts.
- Universal fit for most UK cars and trailers using 7-pin electrics.
- Quick to replace — gets lights and indicators working again without faffing about.
- Wiring diagram available to help with installation if you’re not a wiring expert.
Technical details
Manufacturer: ASC
Brand: ASC
Manufacturer reference / part number: ASC12nSocket
Type: 7-pin 12N trailer socket (lighting circuits only)
Why this socket helps
Most lighting faults come down to corrosion or worn contacts. Swapping in a fresh plastic socket like this usually sorts the problem in minutes, rather than spending hours tracing loose wires. It’s a cost-effective repair that gets indicators, brake lamps and tail lights back to working order — handy in winter when wet conditions speed up corrosion.
Installation and compatibility
Thinking of fitting it yourself? No drama — installation is normally straightforward. The socket uses standard 7-pin wiring (12N) so it mates with the common vehicle sockets on most cars and trailers. There’s a wiring diagram to help match colours and terminals if you need it. Bear in mind this is the lighting-only 12N socket, so it won’t carry extra circuits for appliances — for caravan power features you’d need a 13-pin socket.
Typical use cases
- Replace an old, cracked or corroded socket to restore trailer lights.
- Keep as a spare part for caravans or trailers stored away seasonally.
- Quick roadside or garage repair when lighting faults crop up.
Some buyers might wonder if this will work with custom wiring — for standard 7-pin setups it usually will, but if the trailer uses non-standard colour coding or extra circuits it’s worth giving the wiring a quick once-over first. Overall, the ASC 12N 7-pin plastic towbar socket is a practical, reliable replacement that gets the lights back on and keeps your trips hassle-free.