I follow the same as IronIndian... except I learned form a mechanic buddy if you are unsure of the tune up on the car, spray cleaner on it (not alt/air cleaner), start the car and hose it off. Leave the car running til it's good and dry. That way you shouldn't have issues with water getting into connections.

All our connections are water proofed, so if the car is in decent shape there should be an issue.