I bought a Westfalia towbar wiring harness to go with the towbar I plan to install. I bought it from autodoc and it was listed as compatible with my vehicle which is a Focus Turnier MK4. After ripping everything apart, I saw that the plugs don't match. Actually, I only have one plug and not two (I assume the 3rd is the constant plus and the 4th is the module plug). Also, I didn't go with cheap kits that require wire splicing. I decided to pay more and have a plug and play option but even this kit requires tapping into a wire. There is also another wiring harness form Westfalia for the same model. It is similar but you have to tap the wires. On the Ford Germany site the original wiring harness is sold out and it has been for a while. Can I buy a plug and play version somewhere?

The pictures and diagrams are in the link below 👇 

https://imgur.com/a/iBog5lm

 

It looks like you went for a very cheap kit, generally, vehicle specific wiring kits like the one I bought for mine get the light signals from the canbus aka not needing to tap into the brake light wiring of the car.

On mine, I had to run two looms from the back of the car to the front, one loom contained the can bus wires and the power wire for the trailer light module, the other loom contained the three power wires for split charge relay which was part of the kit (I went for a 13 pin kit) at the rear of the car, there was the 13pin wiring, the split charge relay, the trailer lighting module and the ground wires for the wiring.

6 minutes ago, Neb_engineer said:

It looks like you went for a very cheap kit, generally, vehicle specific wiring kits like the one I bought for mine get the light signals from the canbus aka not needing to tap into the brake light wiring of the car.

On mine, I had to run two looms from the back of the car to the front, one loom contained the can bus wires and the power wire for the trailer light module, the other loom contained the three power wires for split charge relay which was part of the kit (I went for a 13 pin kit) at the rear of the car, there was the 13pin wiring, the split charge relay, the trailer lighting module and the ground wires for the wiring.

Cheap kits start at 30e, I paid 150e for mine. It was vehicle specific. It should be plug and play. Westfalia is a well known brand.

2 hours ago, whatwhere said:

Westfalia towbar wiring harness to go with the towbar I plan to install.

Oh dear 🙁

Why didn't you buy the Ford wiring kit to go with your "unknown" car ?

 

5 minutes ago, unofix said:

Oh dear 🙁

Why didn't you buy the Ford wiring kit to go with your "unknown" car ?

 

🙂 I joined before buying a Ford.

Hi Luka, nice to see your profile updated 👍

You would be well advised to buy the Ford trailer module for your towbar, then it will be plug and play. 😀

On 7/7/2025 at 6:49 PM, unofix said:

Hi Luka, nice to see your profile updated 👍

You would be well advised to buy the Ford trailer module for your towbar, then it will be plug and play. 😀

The problem is that I can't find them anywhere. If someone knows where to buy a towbar wiring kit that involves little or no modification and is available in Europe, please link it.

Did you resolve your issue? 🙂

The imgur link doesn't work so I can't see your kit, but I put a towbar on my MK4 Active Turnier not to long ago, although a vehicle specific kit.

On 7/8/2025 at 10:42 PM, whatwhere said:

The problem is that I can't find them anywhere. If someone knows where to buy a towbar wiring kit that involves little or no modification and is available in Europe, please link it.

https://www.ecs-electronicsuk.co.uk/en/towbar-wiring-kits/ford/focus/fr063d1u.html

This is the one I have

From where I bought my kit in Sweden there is 3 brands that provide vehicle specifik wire kits.

Just like above ECS is one of them but also the most expensive one, you also have Erich Jaeger and Trail-Tec that provide them, I believe they are all the same.

And one thing I know all of them have in common is that the installation manual is horrible.

In many cases a vehicle specific towbar wiring kit is not enough.

From the Focus MK3 onwards the penny pinchers at Ford decided to no longer install the towbar preparation as standard. The towbar preparation needs to be ordered as a separate option instead.

Vehicles that are manufactured without the towbar preparation lack part of the wiring that is required to install a vehicle specific towbar wiring kit. Which wiring is missing depends on each specific Ford model but generally the required CANbus wiring and power wiring are missing. This is just a way to save about 20 meters of wire on each manufactured vehicle. 

- Vehicle with towbar preparation --> vehicle specific towbar wiring kit is enough.
- Vehicle without towbar preparation --> vehicle specific towbar wiring kit is not enough. Another vehicle specific preparation kit is required to install the missing wiring.

Both the original vehicle specific towbar wiring kit and the additional vehicle specific towbar preparation kit are available from Ford. These however are not cheap. Many manufacturers of aftermarket vehicle specific towbar wiring kits include also offer optional wiring to be able to connect the kit on a vehicle without preparation. These however are usually less sophisticated as the original Ford wiring. I have seen preparation kits before that use Scotchlok connectors to tap into the CANbus wiring.