Windshield wipers stopped, headlights partially work, horn, interior light have all intermittently quit working

2002 FORD RANGER
247,000 MILES • 3.0L • 6 CYL • 2WD • AUTOMATIC
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PATRICIA FARIAS WILLIAMS
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Work one day and quit the next. My husband changed the heater core while it was raining without taking dash apart. The windshield wipers stopped shortly and I had to drive the truck! The fuses got wet I think as did my driver seat. The heater core is on the passenger side. My husband is a master mechanic. Things sound right to you?
Oct 23, 2018 at 5:21 AM
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STRAILER
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Hello,

it sounds like the GEM is going out for the wiper/interior lights and the horn will be separate issue please start a new question for that.

https://www.2carpros.com/questions/new

Here are the wiper and interior light wiring diagrams so you can see how the work with the GEM with the location of the GEM which is behind he center of the dash so you can replace it.

Check out the diagrams (Below). Please let us know what you find. We are interested to see what it is.

Cheers, Ken
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Oct 24, 2018 at 12:52 PM
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PATRICIA FARIAS WILLIAMS
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Well if that GEM is also describes the parts for my 2002 Ford Ranger edge 3.0
Oct 25, 2018 at 5:09 PM
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STRAILER
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The GEM controls the items that are not working so I think the GEM will solve the problem. Please let me know check out the wiring diagrams so you can see how the system works.
Oct 25, 2018 at 5:10 PM
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PATRICIA FARIAS WILLIAMS
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thank you sir!
Oct 25, 2018 at 7:51 PM
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STRAILER
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NP please let me know what happens :) have a good weekend.
Oct 26, 2018 at 10:19 AM