In the past week or so, my car seems to have started making a "clicking" sound during each wiper stroke. It always seems to click when starting the stroke and sometimes when beginning to reverse the stroke, from the top. It sounds just like a very noisy small relay, which I suppose it most likely is. I certainly don't recall hearing the sound before, especially considering how annoying it has been to me lately. Anybody hear this before? Should I just try to locate and replace this relay, if that is indeed the problem?