I just upgraded to a 35amp controller. Everything was working before I installed it. I don't remember if the taillight is suppose to be on when the key is on. With the new controller the headlight works and the brake lights work but the taillight doesn't. Is it suppose to be on? The headlight turns on and off like it should. The tailight does not come on at all with or without the headlight. It does work when the brakes are applied. Another setting?