Now days I don't drive my car very much and I have it on battery tender to keep the battery charged. Today after starting the car I noticed the red alarm light came on and stayed on. I waited to see if it will go away but not. I drove around with red light on. I also thought if I open the door while engine is running and the red ligh is solid red the alarm will go off but even that did not happened. I am not electrically oriented much. Any recommendations and help welcome.