The previous owner of my car decided he didn't need any windshield wipers so he proceeded to remove the wiper motor and the inside switch, I just purchased a new motor, and am wondering what the wiring looks like. He did not cut any of the wires he pushed them through the firewall back into the car, but he also did this with the heater wiring, and most of the original gauges.(so I have mess of plugs and wires. Can anyone tell me what the plug for the wiper motor looks like wire colors etc and also what the plug for the switch looks like. its a 68. Any help is appreciated.

I am going from memory here...

The wiper switch has a 3 wire connector and it seems to me one terminal is perpendicular to the others. Colors were something like light blue, black, and dark blue. The pigtail should come out of the dash wiring harness at the same point as the headlight switch pigtail.

The wiper motor has two connections, a 2 wire and a 3 wire. The 2 should have yellow and light blue and the yellow should also connect to the 3 wire. The other 2 wires on the 3 wire connector are dark blue and black. These connectors are more of a strip or inline configuration.

Hopefully that helps and you can see the wire colors. Some clown did a spray bomb job on mine and all the wires are black...

Steve

Try my site, has the schematic on it.

Where on your site is the schematic

I found all the wires! Now if I just wanted to run a toggle switch to have the wipers on and off would this be possible and which wires would I use?

There is a picture here somewhere that coppertop drew of the wiring.
I'll see if I can find it

Here is the wiring diagram
http://elcaminocentral.com/articles/wiring/702.gif

Another picture I found

I found all the wires! Now if I just wanted to run a toggle switch to have the wipers on and off would this be possible and which wires would I use?
The wipers on '68 use a ground switched circuit, which means that connect any one of the three wires on the switch to ground and stuff starts to move.

From the notes I made when I had mine all apart... Blue is washer, Black is high speed, and Light Blue is low speed. The stock switch connects both Black and Light Blue to ground for high speed but it is likely that the Black is redundant here.

A three position toggle with center off could be used to provide high/low operation but you would lose the washers unless you had a seperate push button.

Note also that the original switch is pushed for washers and this mechanically rotates the switch into the low speed position.

Steve

I'm not too sure how well a toggle switch would work. For starters, to get low speed, the black and blue wires are grounded. For high speed, just light blue is grounded. But, getting the proper wires to ground to provide the speeds you want isn't the problem.

The problem with using a switch other than the factory switch is what happens when you turn off the wipers. When the factory switch is turned to the off position, both the black and light blue wires are connected together, but not grounded as they are when the switch is in low speed. The park contacts inside the motor are grounding the wires, instead of the switch. (The park contacts are located inside in such a way that a cam on the gear drive opens them at the right time to provide the proper park postion.) This allows the motor to run in low speed. When the park contacts open, the motor stops in the park position.

If you just disconnect the light blue and black wires to stop the motor, the motor will go into high speed because the park contacts are still closed, providing a ground for the blue wire. When the park contacts open, the motor will be going too fast to stop in time for the contacts to stay open. The motor will attempt to stop, but, even without power, the momentum will cause the motor to spin just far enough to allow the contacts to close again. The motor will continue to stop and start until power is removed from the motor. Then the wipers will stop randomly on the windshield.

Hope this makes sense. It's pretty complicated, but I guess there isn't an easier way to run wiper systems or the factory would have figured out something else!

Larry

http://geocities.com/supersport396_2000/wipers.htm

If you just disconnect the light blue and black wires to stop the motor, the motor will go into high speed because the park contacts are still closed, providing a ground for the blue wire. When the park contacts open, the motor will be going too fast to stop in time for the contacts to stay open. The motor will attempt to stop, but, even without power, the momentum will cause the motor to spin just far enough to allow the contacts to close again. The motor will continue to stop and start until power is removed from the motor. Then the wipers will stop randomly on the windshield.

Hope this makes sense. It's pretty complicated, but I guess there isn't an easier way to run wiper systems or the factory would have figured out something else!

Larry

Larry It makes sense to me. I've seen it happen several times. If the black wire is not grounded with the switch in the OFF position the motor will run in high speed and, as stated will, some times will not stop.

Dean The first pic should be deleted, the black and lt blue wires were crossed. The second pic is the corrected version.


This is the text that goes with the second pic (http://www.chevelles.com/forums/attachment.php?attachmentid=1266). This information applies to the hidden wiper system. I believe the switch function is the same for either system, hidden or non-hidden.

1-Wiper switch.
Off – Black wire is grounded.
Low – Black and Lt blue wires are grounded.
Hi – Lt blue wire is grounded.
Wash – Dk blue wire is grounded.
Pushing the switch from off sets the switch to low speed and grounds the Dk blue wire.

2-Run solenoid. The Lt blue wire is grounded to lock out the park (mechanically prevents the wipers from being driven to the park position) and close the run/park switch.


3-Shunt winding. This winding is parallel to the armature winding.


4-Series winding. This winding is in series with the armature and shunt windings.


5-Run/Park switch. Closed when run solenoid is energized (Lt blue wire grounded). Also closed when run solenoid is de-energized and wipers not in park position.


6-Wash pump start coil. When the Dark Blue wire is grounded this coil latches the wash pump for one wash cycle.


7-Shunt winding resistor. The shunt winding grounds thru this resistor during high-speed operation and is bypassed (Black wire grounded) during low speed and park.


8-Wiper motor fuse (25 amp) in fuse block. Has +12 VDC when ignition switch is in run or accessory position.

see any changes or additions needed here Elree?

http://macc.chevelles.net/wwiper_oper.htm