I HAVE AN 03 DURAMAX THAT I JUST INSTALLED A JUICE BOX IN AND IT WORKED GREAT FOR A WEEK AND A HALF THEN THE BATTERY NOT CHARGING SIGN STARTED COMING ON AND OFF INTERMITENTLY. ALSO THE LIGHTS GET DIM AND VOLT METER DROPS THEN IT GOES BACK TO NORMAL. IF I UNPLUG THE BOX IT STOPS DOING THIS . EDGE IS SENDING OUT A NEW BOX TO ME TO TRY . HAS ANYONE ELSE HAD THIS PROBLEM?