Posted by Keith in Washington [172.70.94.48] on Saturday, February 22, 2025 at 17:22:06 :
In Reply to: Re: 1960 Dodge W300 variable speed windshield wipers posted by Greg Coffin [172.68.35.119] on Saturday, February 22, 2025 at 16:26:50 :
Yes there seems to be a duplication in wires on the wiring diagram. Which is weird. The third wire (blue)in his picture comes off the power input lug of the switch. If you look at the wiring diagram it shows a wire (18 orange) that feeds some other circuit. So that leaves two wires (yellow and black) going to the motor which comes off the back of the which should go to the motor. The motor is grounded to the body according to the diagram. With the two wires coming off the switch either it’s a two speed motor or one wire is full voltage and the second is variable voltage which means the switch can only use one wire at a time.