Sorry to have taken so long to get back. Here is a photo:
[IMG]http://i231.photobucket.com/albums/ee39/h4040510/1955%202nd%20Series/WiperMotor.jpg[/IMG]
The Blue wire was fused so I hooked it up to +12 volts. The white and black wires then measured +12 volts each. I do not have a wiper switch but I figured that the switch must ground the wires to complete the circuit. When grounded, the black wire made the sound of a relay closing in the motor. When grounded, the white wire sounded like it wanted to turn the motor but didn't. Any further suggestions appreciated. This is a Delco unit but I could not see any numbers on it.
Thanks,
Hugh