Professional Anderson plug supply & installation

Anderson plugs are the most used and popular solution to power charging a trailer, caravan or camper while driving.


Their main purpose is to transfer the power supply to the battery charge system of your towed vehicle (trailer, caravan or camper). Although 12 pin plugs can be fitted for this purpose, we do not recommend it. The power fed to the plug for charging the battery usually exceeds the capability of the 12 pin plug, which can cause the pin to melt, as it is not designed to hold a high charge feed. Anderson plugs are specifically designed to withstand the needed power charge while driving.


Most common Anderson plugs are grey and red and they are the preferred solution for transferring high current power.

Anderson plugs most common sizes: 50 amp, 175 amp, 350 amp. 


If you're considering wiring your trailer, caravan or camper to your vehicle, give us a call or book a trailer plug installation with us today.

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  • Red Anderson plug = electronic stability control
  • Grey Anderson plug = charging the caravan battery
  • 12 pin trailer plug = to run lighting and provide power to the fridge from the towing vehicle.

Caravan 12 Pin Trailer Plug

12 pin flat plug and socket diagram

12 pin trailer plugs enable all connections for the 7 pin plug to tow a caravan, plus the ability to wire 4x4 accessories.

  1. Left-hand turn indicator
  2. Reversing Signal
  3. Earth return
  4. 4. Right-hand turn indicator
  5. Service Brakes
  6. Stop Lamps
  7. Rear Lamps, Clearance and Side Marker Lamps
  8. Battery Charger/Winch
  9. Auxiliaries/Battery Lead
  10. Earth Return
  11. Rear Fog Lamp
  12. Auxiliaries
12 Pin Plug and Socket Cable Entry Diagram

The 12 pin rectangle trailer plug consists of a row of 7 pins and a row of 5 larger pins.


The row of 7 pins transfers electrical power to run the towing vehicle’s lighting system and electrical braking power.

Anderson plug installation to run the vehicle lighting system

The larger pins are used for higher current most common to run power to a 12 volt fridge or to charge a battery system on a towing vehicle (caravan or camper trailer.)

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Latest Anderson Plug Installations

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10 Jun, 2021
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26 May, 2021
12 pin trailer plug & Anderson plug to provide power to the caravan from the 4WD vehicle

Are you looking for trailer or caravan plug installation in Perth?

We’re here to help!

Get advice on the best trailer wiring solution for your vehicle and have it professionally installed by expert auto electricians. Make a booking today.

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