This question has probably been asked before, but I cannot find an answer using the search.

On my 1991 560SEL, the wipers work fine on the low and high settings, but the intermitant setting is ..... intermittant. Some days it will work and other days it will not. I mentioned it to my mechanic last time I saw him, and he said it is probably the timing relay. (I think that's what he called it)

Any idea where that might be?

If it is in the fuse box, which one is it?