Hello Philip,
Yes it does have electric brakes, with a Redarc controller. I didn't install the controller and don't know from where it gets power.
This problem originally manifested when starting the car, so the car brakes would have been be applied, potentially also energising the trailer brakes. However, in the most recent case of this fault that occurred on re-connecting the trailer well after starting the car, the car brakes were not being applied.
When mucking about with the trailer this weekend I will measure the current drawn by the brakes, at idle and when energised.
Thanks

