Wiring harness
Wiring harnesses for car trailers come either with a 13-PIN or a 7-PIN connector. At Unitrailer.co.uk, you will find all necessary electrical installations for all your trailer needs. Simply browse through our electrical accessories and choose the right for your trailer. Renowned wiring harness manufacturers only!

Light-duty trailer wiring harnesses
Wiring harnesses for light-duty car trailers allow the towing vehicle to stay connected to the rear/tail lights of your trailer. They are not equipped with connectors to side-marker lights by default, which would otherwise mean that they could be used in heavy-duty trailers also. In light-duty trailers, all you need in order to mark the sides is a reflective tape, hence why such wiring harnesses will prove to be an ideal accessory. All electrical wirings sold at Unitrailer.co.uk have a specific length, which means that they are not universal in size and must be chosen carefully, depending on the trailer's transport surface dimensions. It is therefore very important that you check the necessary dimensions before making a purchase or that you consult the purchase with our sales department.Wiring harness for trailers
Wiring harnesses for trailers can be as long as 8 metres and can have as much as 13 pins in their connector (for trailers with a GVW of 750 kg or more). The wiring harnesses sold at Unitrailer.co.uk are extremely robust and resistant to adverse weather conditions. If you want to make sure that your trips will not be held up by pointless breakdowns caused by malfunctioning electrical installations, then you should definitely invest in the accessories of most renowned producers, which can be found all over our website. Happy browsing!
7 pin 4 m cable - 7-pin 5-pin bayonet plug mantes

16,00 €7534 PTS

7-pin trailer wiring harness 4.5 m with 5-pin connectors

21,99 €10355 PTS

Wiring loom for light-duty trailers 5.5 m - 13 pin connector & 5 pin bayonet

23,00 €10830 PTS
![Complete wiring harness for trailers [8-pin bayonet + 13-pin plug]](https://static2.unitrailer.ie/eng_il_Complete-wiring-harness-for-trailers-8-pin-bayonet-13-pin-plug-66.jpg)
Complete wiring harness for trailers [8-pin bayonet + 13-pin plug]

29,90 €14080 PTS

Trailer plug 7-pin plug / 12V KNOTT


Cable for trailer 13 pin 7 m - 13-pin plug, 5-pin bayonet mantes

29,00 €13656 PTS

7-metre long 7-pin wiring harness with 2x 5-pin ends

24,99 €11768 PTS

Trailer installation 7 PIN 4.7 m - plug, bayonets AJ.BA 5-PIN + AJ.BA 2-PIN

32,85 €
- Długość przewodu głównego [mm]:
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LgY (+) cable 75cm 50mm2 M10-M10

24,99 €11768 PTS
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Ground cable LgY 35 cm 50mm2

24,99 €11768 PTS
- Kolor przewodu:
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Installation for a 7 Pin trailer without bayonets with a conductor cross-section of 0.5 mm and a length of 4 m

21,00 €

Electrical harness for a trailer with a 13-pin plug without MANTES bayonets wire cross-section 0.75

29,00 €

7 Pin wiring harness without bayonets with a cross-section of 0.75 mm and a length of 4 m

21,00 €

Electric cable for trailers 7 Pin without bayonets Wire cross-section 0.75 mm

25,00 €

5.2 METRE LONG 7-PIN WIRING HARNESS WITH 2X 5-PIN ENDS

22,99 €10826 PTS

Wiring harness for trailers 7m Aspöck 13 pin bajon 5 pin

41,10 €19354 PTS

A trailer harness with a 13-pin plug without bayonets, 0.75 wire cross-section and 8 m long

29,00 €

Carrier harness electrical system 10 m 13 pin Mantes plug

41,00 €19306 PTS

Universal 13 pin wiring kit for trailers SMP-4PE

![Universal 13 pin wiring kit WUD-07 [no trailer module]](https://static2.unitrailer.ie/eng_il_Universal-13-pin-wiring-kit-WUD-07-no-trailer-module-590.jpg)
Universal 13 pin wiring kit WUD-07 [no trailer module]

24,99 €11768 PTS

Universal 7 pin wiring kit for trailers SMP-2PE


Wiring harness for light trailers 7 pin plug 5 pin bajonet

19,99 €9413 PTS