31 (br) is ground.
53 (gn-bk) and 53b (gn-ye) are the two speeds.
You should be able to run the motor directly with jumpers from the battery using these connections.
31b (gn) and 53a (bk-gr) are used to park the wipers.
31 does make intermintent contact with the parking tracks. These tracks and their wipers can become gunked up and cause problems usually in parking the wipers. Other problems are the relay and the wiper switch assembly on the column.
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Hugh - So Cal 83 944 Driver Person
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