AB Tools 12N 7 Pin Plastic Plug - Pack of 20

Professional 7 pin plug for commercial or occasional use. This listing is for 20 x 7 pin plugs, id...

Best current price£39.25from B&Q

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B&QB&Q - 12N 7 Pin Plug Plastic Car Trailer Caravan Electrical Wiring Lights Connector 20Pc
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£39.25
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eBay12N 7 Pin Plug Plastic Car Trailer Caravan Electrical Wiring Light Connector x20
Free delivery in 1–3 days
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Product Information

Full details

This guide is for individuals and businesses needing reliable electrical connections for trailers, caravans, and other towing applications. The AB Tools 12N 7 Pin Plastic Plug pack of 20 offers a cost-effective solution for establishing or replacing trailer wiring, ensuring essential lighting functions like indicators, brake lights, and side lights are operational. A key benefit is the ease of re-wiring due to screw connections. However, users should ensure they use the correct 7-core cable diameter for a secure fit.

All features

Model Part NumberTR039.1_20PK
BrandAB Tools

Extended Product Information

FAQs

What type of trailer lights does this plug support?

This 7-pin plug supports standard 12N lighting functions, including left and right indicators, brake lights, fog lamp, and side lights.

Can I use this with a 13-pin socket on my car?

No, this is a 7-pin plug designed for 7-pin sockets. You would need an adapter if your vehicle has a 13-pin socket and your trailer has a 7-pin plug (or vice versa).

What is the correct cable size for this plug?

The plug is designed for 7-core cable with a diameter of 7mm to 8mm.

How do I ensure the wiring is secure?

Each wire connects to a screw terminal inside the plug. Ensure you tighten these screws firmly once the wire is inserted to create a secure electrical connection.

What does ISO1724 mean?

ISO1724 is an international standard that specifies the requirements for 7-pin (12N) trailer electrical connectors, ensuring compatibility and performance across different manufacturers and regions.

Does this plug come with wiring instructions?

The product information includes a standard wiring guide showing which function corresponds to each pin number. It is recommended to follow this guide carefully.

Can I replace a damaged plug easily?

Yes, the screw connections inside make it straightforward to disconnect the old wires and connect them to the new plug, provided you follow the correct wiring order.

Troubleshooting

No lights function on the trailer.

Check the connection at both the vehicle socket and the trailer plug. Ensure the vehicle's towing electrics are functioning correctly. Verify all wires are correctly connected to the corresponding pins inside the plug and socket.

Only some lights work intermittently.

Inspect the screw terminals for tightness. Loose connections are a common cause of intermittent faults. Check the earth wire (Pin 3) connection at both ends; a poor earth can affect all lights.

Water ingress into the plug.

Ensure the rubber seal is properly seated and not damaged. Check that the cable outer sheath is securely clamped by the plug's strain relief to prevent water from entering along the cable.

Difficulty inserting cable into plug.

Confirm you are using a 7-core cable with a diameter between 7-8mm. Cables that are too thick will not fit properly.

Pros and Cons

Pros

  • Cost-effective bulk pack for multiple applications.
  • Easy to wire and re-wire thanks to screw terminals.
  • Durable construction for longevity.
  • Provides standard 7-pin trailer lighting connections.
  • Meets ISO1724 international standards.

Cons

  • Requires specific 7-8mm diameter 7-core cable.
  • Plastic housing may be less durable than metal alternatives in extreme conditions.
  • Only suitable for 12N (standard) lighting functions, not 12S (supplementary).
  • Pack quantity may be excessive for single-use requirements.

Setup, Compatibility & Care

Setup:

  1. Ensure you are using the correct 7-core cable with a diameter of 7-8mm.
  2. Strip the end of the 7-core cable to expose the individual wires.
  3. Refer to the wiring guide below to connect each wire to the corresponding terminal inside the plug.
  4. Tighten the screw terminals securely to ensure a good electrical connection.
  5. Gently pull on each wire to confirm it is firmly seated.
  6. Secure the cable within the plug's housing using the integrated strain relief.
  7. Push the plug's housing together, ensuring the rubber seal is properly seated.

Compatibility:

  • Designed for use with 7-core cables.
  • Compatible with vehicles and trailers requiring standard 12N lighting functions (ISO1724).
  • Not compatible with 12S (supplementary) sockets or functions.

Wiring Guide (ISO1724 Standard):

  • Pin 1: Yellow wire – Left Indicator
  • Pin 2: Blue wire – Fog Lamp
  • Pin 3: White wire – Earth Return
  • Pin 4: Green wire – Right Indicator
  • Pin 5: Brown wire – Right Side Light
  • Pin 6: Red wire – Brake Lights
  • Pin 7: Black wire – Left Side Light

Care:

  • Periodically inspect the plug for damage or corrosion.
  • Ensure the rubber seal remains intact and clean to maintain water resistance.
  • Avoid exposing the plug to excessive heat or abrasive chemicals.

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