Wiper Motor Modification for fitting the feedback pots directly to the motor output shaft.
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Output gear removed fro motor and held in lathe
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Turn down the thickness of the bolt head so that it can be "melted' into the plastic gear.( heat bolt head with a small butane torch)
Hold the bolt in the the lathe tailstock chuck to produce a perfect alignment to the gear shaft.
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push the hot bolt head into the gear with the tailstock chuck
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Turn the face flush under the bolt head to restore the "bearing" face
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Drill a hole in the motor cover plate using the lathe.
The reassemble the motor so that the bolt protrudes through the motor cover plate.
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Make a mounting bracket to hold the feedback pot in allignment with the motor shaft