so the other night I noticed my battery light came on. but after awhile it went off. last night it came on again while driving, but then went off and would repeat this a bit. i noticed it only comes on after going 40mph or above for awhile, and then after slowing down or being stopped for awhile it goes back off. pulling from a light i thought i smelt something like a wire burning, but when i looked under the hood i seen nothing. everything looked fine. can anyone give some insight to this?