Looking at my '58-59 service manual it appears there was only 1 type of electric wiper motor. There is a brown wire that is for power that goes to the motor. Within the assembly there is a relay. There are also 2 wires for the switch that goes in the dashboard.
There might be other wires that go to the switch for a washer setup or if it has an intermittent switch.
Where do the 1 and 3 wires go that you are asking about? Power, Switch?
Hope this helps.
Adam
