Ever since I got my short bus (94 E350, N/A 7.3 IDI, E4OD), the windshield washer squirters haven't worked. Anyone have thoughts on where to start looking? I assume the pump is mounted in the washer fluid tank? Is it likely dead, or more likely just a wiring issue? I don't hear any pump trying to run when I activate the switch or anything. This isn't a huge deal, but kinda a bummer when a bunch of dirt gets kicked up and I have to stop at a gas station to clean it and see...