Does anyone know what the proper operation of a trailer ABS light is? I have heard plugin light cord and the abs light should come on for 3 seconds and go off. I have also heard a lot of other theories. The rumor mill has it that this worthless little light has become a favorite item of DOT and that hefty fines have been handed out along with those coveted CSA points (ridiculous) and that several by-the-book drivers have refused to pull the trailers. Since we are so well trained and informed by an ultra knowledgeable as well as communicative company, I wonder if anyone knows for sure what the procedure is. CSA= government meddling into areas they don't know :: about.