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12N Plug (plastic) - (BEE-E035Q) |
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7 pin plug for trailer or caravan road lights.
Cars that are fitted with towballs for towing caravans will also be fitted with at least one or two electrical connection sockets by the tow ball. These sockets are known as 12N and 12S sockets. Power from the vehicles electrics (indicators, fog lights and sidelights etc) is transferred to the caravan through the 12N socket, Supplemental power used by the caravan (including, reversing lights, battery charger and fridge) are supplied through the 12S socket.
The 12n socket is coloured black and has 7 numbered pins.
|
Pin |
Cable Colour |
Function |
| 1. | Yellow | Turn signal (left) |
| 2. | Blue | Fog light |
| 3. | White | Earth |
| 4. | Green | Turn signal (right) |
| 5. | Brown | Side light (right hand) |
| 6. | Red | Brake lights |
| 7. | Black | Side light (left) |
Some new makes of caravansand trailers now use a 13 pin connector. Adapters are available to convert from 12N & 12S to 13pin
13 pin continental system
- Left side indicator
- Rear fog lights
- Negative for pins 1,2,4 & 8
- Right side indicator
- Right hand rear position & end outline, & registration plate
- Brake Lights
- Left hand rear position & end outline, & registration plate
- Reverse light
- Constant 12v power supply
- Power from ignition switch
- Negative for pin 10
- Coding for coupled trailer (on the plug pin 12 to be connected to pin 3)
- Negative for pin 9
Always make sure that the earthing wires are large enough to prevent overheating. Earthing problems are a common fault.
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