im getting really frustrated with this thing!! i installed it a few months ago and it worked great, but recently it stopped working. i found the ground wire going into the fast connection that plugs into the tube was loose and pulled out. i put it back in, got out my multi meter and tested the power to ground. showed 11.5 v dc. i plug it in and does not work. ground seems good to me i stripped more bare and put it back into the connecter and crimped it. still no luck.