Q: I imagine I'm dealing with a ground problem, but where do I even start looking? The wipers will come on when I'm driving, when the passenger side sliding door opens, even when the van is off and key isn't even in it. I have a new battery, new alternator, and replaced the terminals on the battery cables too. None of that fixed it. (No, I did not buy a new alternator in an attempt to fix that, the old one went bad)
A: that's the wiper switch that's causing that to happen i get a lot of those doing that,some of them you can just hit a bump in the road and they,ll come on,its not a ground issue with them if the switch is off and they still do this,its either some wires touching together or the swich going out on it,good luck.