Hello All, So I went to do my mid-winter inspection of vehicles, trailers, & equipment yesterday. All good except our small 6x10 enclosed trailer for our ornamental crew. It has an emergency brake system, and i thought they were engaged and locked yesterday as I was moving it around. I realized they only engage and lock when I plug in the wiring harness to my truck, and it immediately happens when I plug it in. When I remove the harness, they free up. I didn't have too much time to get back to it and try to fix it so I thought I'd read up here about anything. Anyone know anything about this? Thanks for any help I can get.