To the ones who have helped so far...thanks. I now have the wiper motor all hooked up. Went and bought a new one although the other one checked out fine. For some reason this one has a constant 12 volts running from the yellow wire to the motor. In other words, it directly shorts to the firewall when the top screw is in place. Went back and checked the core and it has the same problem. There is no resistance from the male power tab and the other two (blk, ltblu). Has anyone else had this problem? Any help would sure be appreciated!

"There is no resistance from the male power tab and the other two (blk, ltblu)."

Are you using an ohm meter to measure that. If a high range is selected on the ohm meter it probably will indicate 0. Use the lowest range to measure the power terminal to bk and ltbu.

The power terminal gets power whenever the ignition switch is on.

ELREE COLBY thanks for the reply. Maybe I wasn't describing my problem well enough. The thing is...I put ower to the motor(s) and for some reason both have shorted at the firewall. Even the post that the wiper assy goes on under the cowling has 12-14 volts. Went in to ask the guys at O'reilleys if there is any way I could have gotten two bad motors. They said highly unlikely. Both motors have bench tested fine, but as soon as I use the car as the ground it starts shorting. Any ideas. Thanks again

"For some reason this one has a constant 12 volts running from the yellow wire to the motor. In other words, it directly shorts to the firewall when the top screw is in place. "


The yellow wire is always +12V. It should connect to the "middle" spade terminal. The switch won't affect the yellow wire (Elree can correct me on this). The wiper motor operates by GROUNDING the other two terminals (ltblu and black), which completes the circuit.
(From Elree Colby)
Light Blue- grounded in Low-speed and Hi-speed positions.

Black- grounded in Low-speed and Off positions.

Dark Blue- grounded when pushed for washer pump operation.

Any ideas on why these things would be passing voltage from the middle terminal to the rest of the motor and the other two spades on the top portion of the motor. As soon as I put power on the center terminal the whole motor is "HOT". In other words I can't even mount it to the firewall without it arcing. I'm stumped. Thanks

Could it be possible a wire gets pinched while bolting on the washer assembly? Are the other wires connected when the short is noticed? If so maybe a bad dash switch is putting voltage through the blue or black control wires. 68Phoenix is exactly right. When the lt blue and black wires are both grounded it should run in lo speed. With just the lt blue wire grounded it should run in high speed. With the dk blue wire grounded it should engage the pump drive. After battling mine for a week and it working good on the bench, I discovered the wiper motor housing has to be grounded to the body and mine wasn't grounded well enough. Once that was corrected, it worked fine. I'm talking '68-'72 with depressed wipers.

Man this thing is killing me!!! Mine does not have the depressed wipers, the wwmotor is rectangular and it is hooked up exactly as should be I think This is how it looks:
BLK/YLW:Power from the new fuse box (center spade on the top and splits to the bottom terminal with DKBLU)
LTBLU:Top left spade and goes to the switch
BLK:Top right spade and goes to the switch
DKBLU:Bottom spade and shares a connector with BLK/YLW goes to the switch
This is motor #3. As soon as I apply power the uppermost mounting screw arcs and the motor suddenly has voltage running through it. In other words it completely shorts out and voltage is passing straight through it, even the output shaft suddenly becomes hot. I'm at my whits end. Help if you can PLEASE!!!!!