wiper

Hello, What's the correct voltage from the wiper connector on a b250 from 88? Actully, i thing this is the old connection. My motor looks like this: Before i try out a new motor (which i suspect) i just want to be ensure i got the right voltages. There's four pins/cables. Any clues?

Does anyone out there know of any company making a smooth (shaved) wiper cowl for 02-up dodge rams? I have seen them on other trucks but haven't been able to find any for the newer rams. Thanks...