Couplemate Express Trailer Parts

12 Pin LED Trailer Plug

SKU: ELECTRIC-12PIN-Trailer Category: Tag: Brand:

Price

$19.50 Inc.GST

Shipping

Select delivery location

Couplemate accepts PayPal, Visa and Mastercard.

12 Pin LED Trailer Plug

The 12 Pin LED trailer plug is designed for trailers and caravans, featuring stainless steel terminals for auxiliary connections. LEDs are positioned under the cover on both the left and right sides of the pins, making it easier to identify active circuits.

Specifications

Pin Configuration

  1. Ground
  2. Left turn signal
  3. Right turn signal
  4. Brake light
  5. Tail light
  6. Reverse light
  7. Auxiliary 1
  8. Auxiliary 2
  9. Spare
  10. Electric brake signal
  11. Battery charger
  12. Trailer supply

Electrical Specifications

  • Pins 8, 9, 10, 11, 12:
    • Current rating: 35 amp
    • Wire size: 5 mm
  • Pins 1, 2, 3, 4, 5, 6, 7:
    • Current rating: 15 amp
    • Wire size: 4 mm

Additional features include:

  • Chrome-plated brass pins with stainless steel screws
  • Spring-loaded front cover with clip to hold open
  • Internal separator to isolate trailer circuits from the auxiliary battery circuit
  • Weather-resistant rear cable entry seals with a cable-gripping mechanism

Poor connections are typically caused by oxidised terminals or weak links. To minimise issues, solder each cable end before inserting it into the ferrule.

Why Choose a Trailer Vision 12-Pin Plug?

Trailer Vision 12-pin plugs offer superior durability compared to more common brands. The stainless steel screws and ferrules used in these plugs are stronger and more reliable than traditional brass components, which can break when tightened firmly.

A useful tip is to spray WD-40 on corroded terminals to temporarily restore electrical conductivity. However, this is only a short-term fix. For long-term reliability, it is best to invest in a high-quality set of LED trailer plugs and sockets.

Benefits of a 12-Pin LED Plug and Socket

  • Increased current-carrying capacity
  • Easier identification of connections via LED indicators
  • Improved weather resistance
  • Compatibility with LED lighting systems

If you are towing a trailer, always ensure you are using the correct electrical connector. While a 12-pin LED plug and socket suits most trailers, it is advisable to check the trailer’s owner’s manual for confirmation.

What are the advantages and disadvantages of a 12-pin trailer plug?

A 12-pin trailer plug is the standard choice for towing heavy setups like caravans, as it combines standard towing lights with high-current power circuits in a single unit.

✔ Advantages

  • All-in-one connection: Combines standard road lights (pins 1–7) and heavy-duty power lines (pins 8–12) into a single plug.
  • High-current capacity: The 5 larger pins safely run high-draw appliances like 3-way fridges, battery trackers, and ESC (Electronic Stability Control).
  • Backward compatibility: You can plug a standard 7-pin flat trailer plug directly into a 12-pin car socket if needed.
  • Clean installation: Eliminates the need to run a secondary plug (like an Anderson plug) just for basic fridge power.

❌ Disadvantages

  • Lower limits than Anderson plugs: The power pins are usually rated for 15A to 30A, which is too low for heavy DC-to-DC battery charging.
  • Tight wiring space: Fitting thick, heavy-gauge cables inside the compact plug housing can be difficult during installation.
  • Debris vulnerability: Because the plug sits low on the bumper, dirt and water can easily corrode the tightly packed pins.
  • Physical size: The casing is significantly larger than a standard 7-pin plug, requiring more mounting space.

Additional information

Weight 0.5 kg
Dimensions 15 × 10 × 3 cm

Our Service Lifetime Warranty

Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.

Couplemate™ is a manufacturer and vendor of high-quality towing, trailer, and caravan components. Couplemate™ Core Goods and Custom Work are guaranteed to be free of defects for the service lifetime of the product when used as intended.

Warranties are non-transferrable and Couplemate™ requires satisfactory proof of purchase prior to issuing a remedy. The full Couplemate™ Warranty Policy can be found in the Terms & Conditions: Section 8 – Consumer Guarantees & Warranty.

Warranties are in addition to your rights under the Australian Consumer Law. If something is wrong with your order, please contact our team.

60-Day Returns

After 60 years of experience, we know that life has its unpredictable moments.

All Couplemate™ orders (online, over the phone, or in-store) have a 60 day period for change-of-mind returns and exchanges. There are some items that can’t be returned and some returns may incur a 15% restocking fee.

You can view our full policy for change-of-mind returns here.

Reviews

Only logged in customers who have purchased this product may leave a review.