Portable brake controller

[Apples69]

Just wondering if anyone can recommend a portable brake controller that can be moved from car To car
Thanks in advance

[#jonesy]

There are a few threads on it.  Otherwise you could Google "plug and play brake controller"
Most just use a normal hardwired controller.
It wouldn't be too hard to make your own harness.
Whatever brand controller you use you would need to make sure you can mount it as required

[Rodt]

There was also a bit of talk about trailer mounted ones that activate by Bluetooth which may be worth investigation rather than taking a unit between vehicles