There is a quick way to check your grounds. You need a multi-meter. First hook both leads to you battery (plus & minus) & check the voltage. Should be around 12.8 volts of so. Now remove the negative lead only and attach it to wherever your grounds attach to the frame. You should see the same 12.8 volts or maybe a little less. If it's 12.4 volts or lower you have a ground problem. Whatever you battery voltage is, a loss of .3 or .4 volts is a problem. If your car does run you should do these checks first without the car running then start the car and check them all again. Good luck.