I was driving down the highway in my 2002 mustang gt (138k miles) on my way to work when all of the sudden my car lost power. The car cycled on and off very quickly and i was able to drive home. I put the car neutral and let it sit for about an hour. When i tried to start the car again there was nothing. No headlights, no dash lights, no working key fob, and no radio. I have no idea what is wrong with it at this point as no fuses are blown. I replaced the starter as I thought that maybe starter solenoid had shorted out but this was not the case. There is power to the fuse box in the engine compartment and i can get the starter to crank when bypassing the relay and jumping it out in the fuse box. The car has a new ignition switch, starter, starter relay, and battery. I do have a car phone charger which has a led on it to indicate when it is getting power. The charger has power when the the car is off (the charger always has constant power) but as soon as you hit the brake pedal, turn the ignition or attempt to turn on the headlights the car looses all power. There is also a massive parasitic draw with the car as well that caused the battery to drain from 12.4v to 4.8v overnight.
Any advice is much appreciated. Thanks
Any advice is much appreciated. Thanks