Wiper Motor Question

[Lethal Tendencies]

'68 C10. I replaced the wiper motor on my truck.
It hasn't worked since I bought the truck. The previous owner bought a used switch but said he couldn't get it to work. He had switch wired incorrectly. I wired it right and heard the motor work but it wouldn't turn the arms. So I replaced the motor. Now it moves the wipers but only once when you push the button in. They won't stay on. Anyone have this issue? And is the wiper motor grounded to the frame some how, I thought I remember I read the motor was grounded. I am thinking the switch could be bad. Also the pump is not installed. Thanks for any help

[Zeroman]

Are you just pushing the bottom, not turning it?

[Zeroman]

If I remember this correctly, pushing the button/switch activates the washer pump and engages the wiper for one "wipe".

Turning the button/switch gives you two different wiper speeds..slow and fast.

Some say the speeds are slow and slower, but these are 50 year old vehicles.

[Accelo]

Lockdock posted a great article on how the wipers work and how to test them.

http://67-72chevytrucks.com/vboard/s...d.php?t=413551

[Lethal Tendencies]

Originally Posted by Zeroman

If I remember this correctly, pushing the button/switch activates the washer pump and engages the wiper for one "wipe".

Turning the button/switch gives you two different wiper speeds..slow and fast.

Some say the speeds are slow and slower, but these are 50 year old vehicles.

Thanks for the info. Yes I am just pushing the button to activate it one swipe. turning the knob to the other positions does nothing. I ordered a new switch.

[Davidf]

Originally Posted by Zeroman

If I remember this correctly, pushing the button/switch activates the washer pump and engages the wiper for one "wipe".

Turning the button/switch gives you two different wiper speeds..slow and fast.

Some say the speeds are slow and slower, but these are 50 year old vehicles.

Not how it works on my truck. When you push the wiper switch to activate the washer, a cam in the switch forces the switch to rotate to the low speed setting. Releasing the "button" causes the switch to remain in the low speed setting until you manually rotate the switch to the off or parked position.

[Lethal Tendencies]

New switch installed. Still doesn't work. Only works when you push the button for the pump and gives you one swipe. I am thinking its not grounded at the motor or I don't have the pump plugged in. Does the pump have to have power through it ?

[BigBird05]

Loc Doc or Grumpy did a great tutorial or wiper motors. Try and search for it. Are you sure that you have the motor wire and the pump wires in the right location? They can be reversed. The Lt Blue and Yellow wires and the black go to the motor. The Dk Blue and yellow wires go to the pump.

[Lethal Tendencies]

Originally Posted by BigBird05

Loc Doc or Grumpy did a great tutorial or wiper motors. Try and search for it. Are you sure that you have the motor wire and the pump wires in the right location? They can be reversed. The Lt Blue and Yellow wires and the black go to the motor. The Dk Blue and yellow wires go to the pump.

I have the motor connected correctly. But I did not re install the pump. So the wiring for the pump is just hanging.

[BigBird05]

Check to see if your wiper motor has this ground strap.

[Lethal Tendencies]

Originally Posted by BigBird05

Check to see if your wiper motor has this ground strap.

Yes it has the strap. Thanks for posting the wire diagram. I had the wrong plug on the motor. I put the plug on the new motor. I just took the plug off the old motor and put it on the new not thinkng the previous owner had it wrong. So now it works great.