Description
Overview:
The 7 pin 12S Plug for Supplementary 12V Towing Electrics is a durable plastic connector used to link a tow vehicle to a trailer or caravan's auxiliary electrical circuits. Built for everyday towing use, it provides the extra power feeds and signals that standard road-lighting plugs (12N) do not carry. Typical uses include fridge supply, leisure battery charging, interior lights, and reversing lamps on older 7-pin systems. Conforming to ISO3732, it is compatible with standard UK/European 12S sockets on tow bars and is suitable for 12V DC automotive systems. Its robust housing helps protect the internal contacts from road dirt and moisture, making it a practical choice for trailers, caravans, horseboxes, and plant trailers that need reliable supplementary power.
Key Features:
- Conforms to ISO3732 for the 7-pin 12S supplementary towing standard
- Tough plastic body for long service life in typical UK weather conditions
- Designed for 12V DC auxiliary towing circuits (caravan fridge, battery charge, interior power, reversing lamp)
- Compatible with standard 7-pin 12S towbar sockets used across the UK and Europe
- Secure plug-and-socket coupling for consistent electrical contact during towing
- Straightforward to wire with standard tools; suitable for routine maintenance and replacements
- Compact round form factor for easy routing and strain relief in tight spaces
- Helps separate auxiliary functions from primary road lights for clearer fault finding
- Suitable for trailers, caravans, and commercial towing where supplementary power is needed
Typical Applications:
Used on caravans and trailers that require auxiliary 12V supplies in addition to basic road lighting. Commonly fitted to older or 7-pin systems to power caravan fridges while driving, trickle-charge leisure batteries, run interior or marker lights, and operate reversing lamps where supported. Useful for service replacements, towbar upgrades, and maintaining legacy 7-pin towing setups.
Also known as:
12S supplementary plug, 7-pin S-type plug, S-type towing connector, auxiliary trailer plug, caravan auxiliary plug, 7 pole supplementary plug, secondary towing electrics plug, ISO3732 12S plug.
Product Specifications
| L&S Part No. | 761 386 |
|---|---|
| Unit of Sale | 1 |
| Machine Type | Trailers |
