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Old 11-14-2015, 02:50 PM
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1999 wipers not working

I'm thinking it's the switch but wanted another opinion.
The Jeep has been a fixer upper. It didn't run when I bought it and had sat outside for several months.
Now it's running, brakes fixed, and I'm running down the little things that need attention.
Anyway, the wipers do not work at all. No position (it has intermittent wipers). I pulled the cowl and the motor is free- I can move the arms by hand. Wiring looks fine. Fuse has power on both sides.
I pulled the connector from the motor and using a test light, checked for power on all pins. Nothing at the motor on any wiper position.
I pulled the wiper switch off the column and checked the power at the connector and have power on 2 pins with the ignition switch on.
This makes me think the switch is the issue. Is this the best way to troubleshoot? Am I missing something?
The Jeep had aftermarket lights on the windshield post. The switch was on the dash cover below the steering wheel. I did pull the lights and all wiring. The power was pulled from a wire in the steering column. Not the main power- that was off a relay under the hood. I don't think the wiper issue is related but wanted to share.
And all other things work. Horn, blinkers, etc.
Thanks.

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1991 Mustang GT 302 5 speed, HCI, 4.56 gear-soon to be Windsor swapped
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Old 11-14-2015, 06:43 PM   #2
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Sounds like you have it right. Here is a link to the FSM & in the wiper chapter there is a diagram to troubleshoot the switch for continuity with a meter. That should verify your results before buying a switch.

See online read only FSMs here:
Jeep Information Center, Jeep Parts Catalog, Jeep Repair Manual & More
You may have to go to the bottom of the page & pick Jeep Resources & online manuals if it directs you to home page rather than the knowledge base.
Pick your model & year then on the drop down menu pick the chapter you need.

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Old 11-14-2015, 08:18 PM
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Thanks
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1999 Wrangler Sport 4.0 5 speed
2014 F150 screw FX4 Eco boost, leveled, Duratracs
1991 Mustang GT 302 5 speed, HCI, 4.56 gear-soon to be Windsor swapped
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Old 11-16-2015, 11:40 PM
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To update this, I replaced the switch and still no wipers. It was then I noticed the wiper motor harness had electrical tape on it. As I unwrapped it, I found the PO had for some reason cut all the wires and twisted each together and covered with tape. I cut all wires and attached with connectors. Now the wipers work great. Luckily the rest of the Jeep hasn't been hacked like this.
Good times.
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1999 Wrangler Sport 4.0 5 speed
2014 F150 screw FX4 Eco boost, leveled, Duratracs
1991 Mustang GT 302 5 speed, HCI, 4.56 gear-soon to be Windsor swapped
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