If you don't already have one, do yourself a favor and invest in a multi-meter. They are around $10 @ Radio Shack, or you can get the fancier one that "beeps" for $30 to $40. I use it all the time for my car and house. Before you start the car, put the leads on the battery and check voltage( should read 12+), then start car and check again, it should be around 14+. You will be able to trace alot of electrical problems with that meter. Good luck.......electrical stuff is a PITA! Kel