I have an 89' Comanche and the windshield washer pump isn't working. I've tested it and there is power going to it, I replaced the pump and that still didn't do it. When the leads are open or the pump is out, when I try to spray washer fluid the wipers will go but if the pump is in or the leads are jumped, the wipers don't move at all. I believe it's a wiring issue but I'm not sure if it is or how to fix it. Any ideas?