i am having a problem w/ my car firing. when i turn the key over it turns over fine, but i have no spark at the coil. when i am turning the car over i only have 9 volts at the positive side of the coil. i am running a ready to run distributor from MSD. i contacted them and they said to jump a wire from the positive side of the battery to the positive side of the coil. when i did that it fired right up. they said if it started it would not be the internal module in the distributor. but then when i tried to shut it down i turned the key to off and the car continued to run. i had to pull the positive side of the battery off to get it to shut down. i cant figure out why i only have 9 volts to the coil. could this be caused by a bad ignition switch since it wont shut down when it does fire?????