More Wiper motor woes - Chevelle Tech
Electrical & Wiring Troubleshooting electrical problems.

 
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post #1 of 5 (permalink) Old Jan 19th, 14, 6:47 PM Thread Starter
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James
 
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Location: Orange County, CA
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More Wiper motor woes

Yes, I've scoured the forums here, Team Caramo, and Nova...

Here's what I have:
69 Chevelle-307
American Auto wire kit installed
New wiper motor from NPD, I still have my old motor as well.

With the old motor installed:
White power wire to center terminal for power when key/ignition on.
Black wire ground for low speed, plugs in next to white power wire terminal.
Lt. Blue wire ground for high speed, plugs into lone tab next to white/blk terminals.
Added extra ground strap from screw location to firewall
Currently washer motor not installed.

With everything connected and turning key into power on position the fuse blows. After disconnecting the power/ground cables at the motor I installed a new fuse, power on, and fuse does NOT blow. Measure voltage while wire unplugged- 12v at white power wire. As soon as it's plugged in fuse blows.

Disconnected black & lt blue wire from dash switch-fuse still blows when connecting white power wire to motor. I've ruled the dash switch out.

With NEW wiper motor installed results are the same. The body of the wiper motor is energized-with the wiper arms unhooked from the ball/socket location I get 12v coming off the ball/arm of the motor itself. I've traced the white power wire all the way down through the fuse block. It looks like it's feeding off the tac terminals? I don't see any crimped/cut cables that would be grounding out anywhere. The motor works fine as long as the actual wiper arms aren't attached at the ball/socket. It's like they create another/new ground that shorts something out even tho the motor has 2 ground straps.
Chances of my old motor and my new/remanufactured motor are both bad?

...I'm very tired.


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post #2 of 5 (permalink) Old Jan 19th, 14, 10:11 PM
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Re: More Wiper motor woes

Is the ground strap on the wiper motor? It goes from the washer pump to the lower right mount on the wiper motor. It is gold in color.

Tom Rightler, MCC VP & Newsletter Editor

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post #3 of 5 (permalink) Old Jan 20th, 14, 1:31 AM Thread Starter
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James
 
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Location: Orange County, CA
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Re: More Wiper motor woes

Hi Tom, the washer motor isn't attached to the wiper motor at the moment. The Dk blue and white power lines to the washer pump are just sitting in air. There is a ground strap from the top most screw hole to the body of the wiper motor. I also added another from the lower left screw hole to the firewall.

[IMG][/IMG]


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post #4 of 5 (permalink) Old Jan 20th, 14, 12:42 PM
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Re: More Wiper motor woes

Oh, you have a non concealed wiper setup. Your car must be a 300 deluxe. I'm not exactly sure how those wiper motors work compared to their concealed wiper counterparts but I would try grounding it first to see if anything changes.

Tom Rightler, MCC VP & Newsletter Editor

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post #5 of 5 (permalink) Old Jan 20th, 14, 9:03 PM
James
 
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Location: Orange County, CA
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Re: More Wiper motor woes

Yes, I have a 300 deluxe. The unit is already grounded in two places. There's two straps running from the screw hole locations to the firewall. However things still short out.
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