I have a 1994 dakota w.220k.p/s, at, non working a/c, Driving in a pouring rain last night the wipers failed on high speed. Today I checked fuses, they seen OK, and I hear the motor running. moving the system manually I hear a clunk under the cowl on the drivers side. before i start tearing tings apart, what should I need or prepare to buy?? Suggestions?? Thanks!!