Last night I went to an event about an hour away from home through heavy rain all the way. When the event was done I went to leave. The keyless entry worked. I tried to start the car and nothing happened. No clicking, no dash lights, no interior lights. The keyless entry stopped working too. All power was totally gone. Someone helped me try and jump start the car but that didn't do any good either. Even with the jumper cables all connected my car still had no power to anything. Someone else tried to help and connected his multimeter. My car's battery was good. It just seems that the power isn't getting into the system somewhere down the line. I ended up leaving the car there, my wife had to come and get me. I'm going back later today to see if perhaps some connection was shorting out because of the heavy rain and long drive. Maybe having some time to dry will help. Is there anything else I should check? Would any one fuse affect the total electrical system of the car?

This car recently broke the power steering pully & belt. PS pump was changed & new belt inserted but now the temp needle rises very fast and the radiator empties into the reservoir. What might be done to diagnose the problem? PS. The car ran very hot for a few mins the day it broke the belt...; no signs of oil in radiator nor water in oil, though.