I've got a couple connections I'd like to replace on the car. So is there anywhere I can buy the connections and pins?

The individual pins or sockets will be available from Farnell Components in Leeds. The big problem is knowing which ones you want/need from the 1000's of different types available.

https://uk.farnell.com/?CMP=KNC-GUK-PFB-Control-814&mckv=s0VsOS2qD_dc|pcrid|540267852672|kword|farnell electronic components|match|e|plid||slid||product||pgrid|3956849589|ptaid|kwd-642629201|&gclid=CjwKCAiAnO2MBhApEiwA8q0HYVQ1velO1x4Ab25tQbfmvX_PtR4YrWIp7MrHR1ZWnZ8w4OfasOuJoRoCDh8QAvD_BwE

17 minutes ago, unofix said:

The individual pins or sockets will be available from Farnell Components in Leeds. The big problem is knowing which ones you want/need from the 1000's of different types available.

https://uk.farnell.com/?CMP=KNC-GUK-PFB-Control-814&mckv=s0VsOS2qD_dc|pcrid|540267852672|kword|farnell electronic components|match|e|plid||slid||product||pgrid|3956849589|ptaid|kwd-642629201|&gclid=CjwKCAiAnO2MBhApEiwA8q0HYVQ1velO1x4Ab25tQbfmvX_PtR4YrWIp7MrHR1ZWnZ8w4OfasOuJoRoCDh8QAvD_BwE

I dont suppose they can identify the connection from a screenshot from the wiring diagram?

Actually, I think I can narrow my search down with the filters. Thanks @unofix.

On 11/22/2021 at 6:13 PM, unofix said:

The big problem is knowing which ones you want/need from the 1000's of different types available.

So, as you said, the problem is finding which connector is the right one. With Farnell, you have to select the connector with the same amount of pins (which narrows the search down to about 1000!!) and then download each data sheet for a drawing of the connector. I still wasn't sure I'd get the right one.

So after a few hours of trying, I typed into Ali Express search Ford Focus Mk3 Trailer Module Connector and hey presto it came up straight away. I've just received it (took about a month to arrive) although it's not come with any pins.