How can I restore power back to this vehicle?

I replaced the climate control actuator. To test the new unit I turned the car on but forgot to put the factory radio back in. Car ran for about 15 seconds, within which vehicles idle dropped, studdered, raised to aprox 2,000 rpm three times, then vehicle totally died. thre result was no electrical power anywhere.... And I mean anywhere! I replaced the battery two months ago, checked it, and still has appropriate voltage. So I checked all correlated fuses. Nothing was blown. No smell of any thing burnt. So I disconnected battery and tried doing a vehicle reset with the radio reinstalled. Nothing. Now the vehicle has absolutely no power any where. When I reconnect the battery there isn't even a spark when the clamps touch the terminals. The vehicles anti theft light is not on. I mean Nothing. Please help. No one seems to know besides "take it to the dealership".