can you provide a little background info on your problem? like was the car sitting for an extended amount of time? did you run out of gas? Was the car sitting with the SKS on for more than a couple of days? From the little info you have given I can broadly guess is the lead acid battery will not hold a charge. the lights, computer etc are run off of the lead acid battery. Replace that battery and see what happens. If you ran out of gas and kept driving, that is a whole different and more costly problem.
