I installed a Hopkins wiring kit to my 2016 Chevy Equinox for towing purposes. That was in 2017. I worked fine until about six months ago. Now I only get the "parking" or "running" lights on the toad and not signal or brake light. I have tested the tow bar pig tail and am getting running, left/right turn signal and flashed and brake lights. But when I plug it into the Toad, only the "parking" or "running" lights are on....no signal, or brake, either side.