I just installed a "Brightass" tail/stop light on my 2004 HD FXSTS. The scoot has been parked for approx. 2 1/2 months, battery didn't have enough power to start the engine however the tail/stop light, headlight and turn signals worked. I charged the batter the rode it about 4 miles to a gas station. When I was ready leave, the battery didn't have enough power to spin the engine. I jumped with a car and got it started, then drove about 7 miles and noticed the low charge warning light was on and also what I believe to be the check engine light was on. I pulled the clutch and hit the kill switch, both lights went out. When I moved the kill switch to the on position and released the clutch, the engine started and both lights were out. Within about 5 seconds, both lights were on again. I have no idea what is going on but the battery is not being charged at all. Any help or suggestioins will be greatly appreciated.