I have the battery tender jr, and I have used it for the last two years with no problems. Each year when the season is over I hook up the red to the positive and the black to my helmet lock. I am tired of using the clamps and want to install the pig tails. I was told I can hook the red to the positive terminal and the black to the negative terminal, is this true? Or do I have to hook the black connector to a ground somewhere on the bike? Seems like a dumb question but this has always confused me.