I use my 1969 Jeepster Commando for plowing, and we are in a middle of a blizzard right now here in Michigan. My wipers did work, but rather slowly, on the fast setting. Now they don't. When I get back from church,I'm going to go back out to the pole barn to troubleshoot. I am going to test the motor first, and than make sure the wires look good. Are there any fuses to check, or common problems/ fixes I should know about?