Turned the key, everything lit up as usual, then in a flash everything went dead. Have not seen any signs of life since. Checked all fuses (front and under seat). Not sure how to check relays. I did switch them around, (like one would do a light bulb). Still nothing. Wiggled the battery connections. They're all tight. Have not tested the battery, but assumed that would be a noticeable slow draining process with warning signs, not "Bam!". Any and all suggestions welcomed. 2009 SE5.

Thanks!