12V 7 Pin Trailer Plug Female

This 7-pin trailer socket is a direct replacement for a damaged or worn socket on the tow vehicle side of trailer, caravan or implement wiring, and works equally well for wiring up a brand-new connection from scratch.

Built for 12V systems, it mates with any standard 7-pin trailer plug, including the matching MST7P plug.

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Dimensions and installation

• Pins: 7
• Voltage: 12V

Tip: pair this with the matching MST7P male plug if you’re wiring up both ends of a new connection rather than replacing just one side.

Compatibility

Fits any trailer, caravan or implement using a standard 12V 7-pin connection.

If you’re unsure whether your setup uses a standard 7-pin socket, contact us before ordering.

Also suitable for other machines?

Yes — the standard 7-pin trailer connector is used across a wide range of trailers, caravans and farm implements, not just tractors. Contact us if you’re not sure your setup matches.

Why the standard pinout matters

Universal compatibility:
Using the standard 7-pin layout means this socket works with the tail lights, indicators and brake lights already wired on most trailers and implements, without needing to rewire the circuit.

Reliable connection:
A worn or corroded socket can cause intermittent lighting faults. Replacing it directly restores a solid connection without touching the rest of the wiring.

Frequently asked questions

Why choose this trailer socket at Wattz?

We specialise in LED lighting for agricultural machinery and help you choose the right solution for your setup. Read our customer feedback on Google.

Keeping a spare 7-pin socket on hand means a damaged connector never holds up a trailer hookup at a busy time. Order today for a durable, reliable replacement.