2000 Cherokee 4.0. Checked all fuses. No electricity to the interior at all. When I first reconnected the battery the dome light did come on. But it went out when I pushed on the brake. When I turned the switch to start there was one very brief sound from the starter and then nothing. There's no juice anywhere, no headlights, no radio, no dome light, etc. Any ideas?

Remove and fully charge, or replace, the battery. My bet is the battery is shot.