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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

84 window wipers

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Old Jul 26, 2012 | 01:35 PM
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84 window wipers

help!! i have an 84 f250 with intermittent window wipers and i cant get any power coming into the switch. Any advice would be greatly appreciated
 
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Old Jul 26, 2012 | 02:51 PM
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Welcome crazyfordguy! Lots of good folks here who know more than I do about these problems, but maybe I can hit some really simple things. Let's face it, even a stopped close is right, twice a day. First and most simple, have you checked the fuses? Also, have you tried running a jumper from the battery to the positive in on the motor, with the negative in grounded to confirm that the motor works? Two easy things to check that will help narrow down where to search for answers.
Good luck.
 
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Old Jul 26, 2012 | 03:23 PM
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ya. i ran a jumper and the motor works fine. i couldnt find a fuse however it turns out that the switch has a built in cicut breaker. i ran all the tests and its fine. i think my hot wire is shot but i dont know witch one it is. i know the wire comes from the key but i cant trace it. the truck is an XLT with a rotary switch so i dont know if that would make a difference
 

Last edited by crazyfordguy; Jul 26, 2012 at 03:28 PM. Reason: forgot
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Old Jul 26, 2012 | 03:45 PM
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There is a wire that comes off the back of the switch that needs to be grounded, It won't work unless this wire is hooked up
 
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Old Jul 26, 2012 | 04:26 PM
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The wiper switch gets it's power from the ignition switch.

Black/Light Green Hash wire.

The ignition switch has to be in run, or accessory to test the wire for 12v power.
 
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Old Jul 26, 2012 | 04:31 PM
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The intermittent wipers have a ground wire on the side of the switch, that is NOT in the harness
 
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Old Jul 26, 2012 | 04:51 PM
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Originally Posted by dustybumpers
The intermittent wipers have a ground wire on the side of the switch, that is NOT in the harness
Correct, but it's not needed to test the power wire.

Using a test light, he can test the Black/Light Green stripe power wire, with the intermittant wiper switch disconnected from the main harness.

He needs to test this in the run or the accessory position.

If no power on this wire, he needs to trace it back to the ignition switch and do a continuity check between both ends of the wire.

If there is power, then it's the switch, govenor, or a problem forward from the switch, and various wiring, including the ground wire you speak of.
 
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Old Jul 26, 2012 | 05:20 PM
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i found the black/ green wire,but no juice. it comes from the steering column? cause i dont have a black/green hash wire going up the column
 
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Old Jul 26, 2012 | 05:23 PM
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the only wires i have on the column that are hot are light blue, yellow, and white with pink
 
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Old Jul 26, 2012 | 05:25 PM
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any of you guys have a diesel cause the wiring might be different to accomodate the glow plugs
 
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Old Jul 26, 2012 | 09:02 PM
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See if this helps you:

https://www.ford-trucks.com/forums/1...l#post11039831
 
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Old Jul 27, 2012 | 11:43 AM
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the farthest back that i can trace that black/green wire is where it enters the wiring harness by the switch. i cant seem to find it anywhere after that.
 
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Old Jul 27, 2012 | 01:10 PM
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Did you look at the wiring diagrams in the thread I posted above?
 
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Old Jul 27, 2012 | 01:11 PM
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The ignition switch is located at the bottom of the steering column behind the dash. It's bolted to the top of it.

The wires doesn't actually enter or go up the column. The Ignition Lock has a metal actuating rod that goes down the length of the column that connects the two components.

It's not easy to reach without dropping the column off it's dash support.

That thread that CTUBUTIS is pointing you to has some great information in it.
 
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Old Jul 27, 2012 | 04:35 PM
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thanks man. wow i feel like a complete idiot. i couldnt find the wire for like a week. now that i found it they should be running by today
 
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