Wipers won't stop!

Been there. This happened to our 1989 240 wagon. It's the wiper relay.

Sounds easy, but FINDING the relay is the hard part. As I recall, the relay is located under a panel, under the carpet, on the floor of the driver's side. It's hard to describe the location. There's a picture in my Haynes manual which only made sense after I found it. You have a white plastic handle to open the hood. If you follow that to the point where it enters the bulkhead, under the dash, above the driver's left foot, you'll see a mess of wires, including the bunch in the upper left corner that go behind a black metal panel. You can actually pull that bunch of wires and drag the relay out, but you'll never get it back in. It's easier to pull up the carpet and remove the one or two screws that hold the black panel, then you can easily replace the relay.

Why they put the wiper relay under the floor is anyone's guess. In my case, I did a post-mortem on the relay and found it full of water.

That makes sense as this problem started the morning after a heavy rain.

Thanks man!