Check your battery terminals. Check your ground (your ground that the negative battery terminal connects to). If it isn't that ground then check other grounds throughout your car (if you have a haynes manual it will list your electrical diagrams in the back of the book). When looking for the week electrical connector check for one that has several (majority) different components using it as their ground. If you can't find it take it to a dealership, they can more easily find it. And if your vehicle is still under warranty skip all the steps I have just told you and take it there, 'cuz it will be covered under that if so.