Cinderelle wrote:
...I read that with the wheels turning, pull the switch out and the brakes should lock. That makes me a bit nervous, is it safe to do this if I am towing the TT VERY slowly, to have someone pull the pin out? Or should I take it to a garage and have it put a lift for testing?
I can't think of a safe way to accomplish that during a pre-trip inspection. I know the commercial vehicle officers in our area test commercially plated trailers with electric brakes by pulling the pin with the TV in park, then confirming the activated trailer brakes will hold back the truck/trailer combo at idle, once the TV is put in drive. That's the test I use during my pre-trip. That's in addition to any tests prescribed by the manufacturer of your trailer brake controller.
(edited for clarification)