i have a 1990 Deville almost near 140k was a very strong running car, no problems at all. untill one night i was running errands n at the last stop my car just wouldnt crank all the lights come on but no crank. here's what ive done so far ignition switch, starter enable relay, starter, and a new key. oh and new terminal connectors and new battery. after all that still nothing i checked the neutral saftey switch wires to and from and they all have current running threw them. SOMEONE PLEASE HELP ME... also idk if this will help but inside the car when i try and turn the car over i hear a click its a noise i never heard before.. the noise is coming from a black box?or module maybe im not sure but wires run to it and from it, its located under the glove box (black plastic shoe gaurd is removed) could it be the securtity system.