96 Ram 2500 12 valve wiper motor problem? - Dodge Cummins Diesel Forum
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post #1 of 7 (permalink) Old 02-21-2011, 07:09 PM Thread Starter
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Unhappy 96 Ram 2500 12 valve wiper motor problem?

Yesterday I simply replaced the wiper linkage in my truck that has over 500,000KMS with one I scraped last year with just over 280,000KMS. All parts had less wear so I kept what I could. I unplugged the wiper motor & removed the linkage motor & all. I then removed the motor from the old linkage & bolted in on the newer linkage. Plugged that same motor back into the harness & "pop" went the 20A fuse. Removing the motor from the linkage & unplugging it from the harness I put 12 volts on it from the battery with jumper wires & it worked fine, low & high speed. Not connecting it back up I replaced the fuse & turn the key on. Turning the wiper switch I got 12 volts at the wiper connector no problem. Turned the key off plugged the motor back in but not connected to the wiper arms & turned the key back on. "PoP" goes the fuse again. I have swapped the multifunction wiper switch as I had another one. Pop goes the fuse again. Changed the wiper delay module & pop went the fuse again. Tried the other motor i had, pop goes the fuse. Unplug the motor from the connector & turn the key....no problem 12 volts at the motor connector. 2 motors doing the same thing? No problem before I unplugged it from the connector the first time. Weird. I am am electrician & I can't figure it out. I am looking for a wiring diagram for the wipers to trace it out & see what's going on. Thanks

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post #2 of 7 (permalink) Old 02-21-2011, 08:45 PM
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so its blowing the fuse when the motor installed and not with the motor off right? sorry i got a little confused.

but if thats the case i would think that when the motor is installed its grounding out, therefore blowing ur fuse. maybe something got bent when u changed it the first time and its grounding out where its not suppose to be

oooooohhhh wow
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post #3 of 7 (permalink) Old 02-21-2011, 09:06 PM Thread Starter
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Thanks but no pins are bent. I checked the resistance on each of the 4 pins on the motor & both motors are the same. Yes it blows when the motor is connected but the switch is not on. It's very strange.
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post #4 of 7 (permalink) Old 02-21-2011, 09:07 PM
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Interesting. My fluid squirter does not work. It sucks.

77 Jeep J20 11 inches lift, locked, 42's, 6BT dodge frame
96 Dodge 2500 6BT/Banks 35's, tow rig
Just a Conservative American
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post #5 of 7 (permalink) Old 02-21-2011, 09:20 PM
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it is possible for both motors to have been damaged enough during removal to over load the fuse, ok you hook a motor to a batty w/ 750 amp but when you hook it to a 20 amp fuse it will blow it all it takes is to bind the gears up in the transmission

I started out with nothing and still have most of it left
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post #6 of 7 (permalink) Old 02-21-2011, 09:39 PM Thread Starter
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No the motors turns easily when hooked to the battery. I just checked the resistance on both the motor leads & they are really low. #3 is 1.3 ohm. #2 is .2 ohm #1 is .2 ohm & #4 is 1.1 ohm.
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post #7 of 7 (permalink) Old 02-21-2011, 11:36 PM
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Wierd mine stopped working this morning too changed a broke fuse had no luck.

2001 2500 qclb 4x4- edge ez, bhaf, 09-10 steering upgrade, and 5in turbo back. Hopefully gauges, lift pump, 100hp injectors, and a shift kit this year!
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