I've got a customer that keeps blowing a fuse in his RainBird controller. When I go out there I replace the fuse and hook-up my ohm meter to each one of the zone wires everything checks out OK. Anyone ever run across this? Does anyone have any ideas why this continues to happen? I would suspect that there are wires that short out after the ground becomes saturated with water and by the time I get out there the ground has dried enough to eleviate the problem. I don't know?