Did you cover up the battery terminals and distributor (if it has one, I'm a philistine and never owned a V6) with plastic bags etc? You don't want to go spraying water on these parts because if it gets in there it can do a number on the electrics and be a bit of a pain in the backside to correct.
I hope you get it sorted because that looks like a nice motor.
autobox and ABS module are below the battery, so although you missed the battery, underneath stil got a drenching bu the sound of it. Undo every sensor in that aear, mop up any water with kitchen towel and spray with WD40 and mop up again, even a hairdrier may work, but water is in there somewhere.