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2004 Ford Mustang Windsheild Wipers

Tiny
ERSKIR
  • MEMBER
  • 2004 FORD MUSTANG
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 33,000 MILES
I do not have a owners manual for car. My windsheild wipers will not come on nor the sprayer. I have attempted to check all fuses but do not even know which does what. Can you help me with a diagram of the fuse box under the dash and under the hood. What do you suggest? Thanks
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Monday, March 10th, 2008 AT 2:54 PM

8 Replies

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Fuse 26 in the under dash fuse panel is for the wiper/washer. Use a test light to check it, so you can be sure it is getting power to the fuse as well as through it. If the fuse is good, check for power at the wiper motor and get back to me. There are 2 relays and the GEM module that control it.
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Tuesday, March 11th, 2008 AT 12:07 PM
Tiny
ERSKIR
  • MEMBER
  • 5 POSTS
I replaced fuse #26 and it tests good. I Pulled the plug to the wiper motor and tested each hole. Pulling the plug directly off, the number two hole from the left comes on with the key turned on. It stays hot as long as the key is turned on. I do not get any thing when I turn the wiper on from any other holes in the plug. The one hole stays on regardless unless you turn the key off. What ya think?
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Wednesday, March 12th, 2008 AT 9:16 AM
Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Try swapping the wiper relay for the a/c relay and see if they work.
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Wednesday, March 12th, 2008 AT 2:05 PM
Tiny
ERSKIR
  • MEMBER
  • 5 POSTS
Where are these relays and what do they look like?
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Thursday, March 13th, 2008 AT 7:27 AM
Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Black plastic squares. You might want to go here
https://www.2carpros.com/articles/mitchell1eautorepair-car-repair-manuals
Ther are full diagrams and troubleshooting with pics to help you along. Easier for you to print it out and look than for me to try to guide you
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Thursday, March 13th, 2008 AT 7:46 AM
Tiny
ERSKIR
  • MEMBER
  • 5 POSTS
Swapped out the two relays, AC works with both. NO wiper action.
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Thursday, March 13th, 2008 AT 9:25 AM
Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
In the battery junction box, left side of engine compartment, forward of strut tower. There are 2 more wiper relays in there. Wiper- run/park, and wiper hi/low. Try swapping out other realys to see if that will fix it
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Thursday, March 13th, 2008 AT 2:37 PM
Tiny
BRONCOBEAST89
  • MEMBER
  • 27 POSTS
I have a 2004 ford mustang and having the same problem, but I just bought it, and it is missing the #2 relay switch on the far right side of the distro box. But I can not find the right part number to order it, can you help me out on that?
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Friday, September 30th, 2011 AT 7:41 PM

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