There are 5 connectors... I think the worst you could have done was set one pair of injectors to fire constantly (as they are fired in pairs, ex 1 and 5 together).

If you left the key in the "Run" position with it not running though, you may have burned up a ballast resistor or even the ignition box. Check your spark.

Pull one pair from all of your plugs (every other cyl in the firing order). See if it's flooded. Disconnect the coil if you have spark, and crank it with the plugs out and your foot on accelerator pedal, and the pedal on the floor to clear it. You can also try a shot of starting fluid in the intake to see if it fires up on starting fluid, if it's not flooded.