• Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

01 Cobra low speed and intermittent wipers not working

  • Thread starter Thread starter Happster
  • Start date Start date Oct 15, 2021
H

Happster

New Member
May 30, 2010
18
0
1
Dunstable, MA
Oct 15, 2021
#1
  • Oct 15, 2021
  • #1
Hey all. I have a 2001 Mustang Cobra. Just swapped everything over to a new SN95 body and cannot get my low speed or intermittent wipers working. High speed works fine. I've changed the run/park relay, the Hi/Low relay and swapped out the multi-function switch with a known working switch. Wires at motor are BK, BK/PK, DG, DB/OG and WH. I ran the YE/WH wire to ground (picked it up at pin 1 of run/park relay) with key on as suggested from another post and low speed wiper came on and was unaffected by the multi-function switch position. At the motor I verified ground at the BK, ACC (+) at the DG and (+) power at WH when hi speed wipers are on, which was probably redundant because the hi speed wipers work fine. I was getting nothing at the DB/OG with the low or intermittent on at the switch, which I think is the power for the low speed wiper. Not sure what the BK/PK is supposed to be (ground from GEM? power from GEM?). The washer pump works, as does the mist wipe when you engage the washer. I suspect the GEM, but could use some help verifying. I did install a new radio system, which I hear shares ground with the GEM, but I was careful to clean up and tighten all grounds on the dash frame. Plus the GEM is functioning for all other tasks. Any other troubleshooting tests I can run to zero in? Much appreciated.
 

weendoggy

5 Year Member
Jan 14, 2019
198
57
38
Aptos, CA
Oct 15, 2021
#2
  • Oct 15, 2021
  • #2
Here's a diagram for a 2003 system, which is much like yours. It may shed (no pun) some light on the subject. Good luck. Think your problem is the YE/WH which doesn't go to ground.
 

Attachments

  • 2003wiper.pdf
    2003wiper.pdf
    188.3 KB · Views: 338
H

Happster

New Member
May 30, 2010
18
0
1
Dunstable, MA
Oct 27, 2021
#3
  • Oct 27, 2021
  • #3
Still stumped. Anyone know what I should be getting at BLK/PINK wire? It runs from GEM to park/run relay and also to motor. Anyone know how to bench test motor or multifunction switch? Low works if I run ground to YE/RED at run/park relay, or if I run power directly to BLUE/ORG. So I suspect motor is fine and something upstream is wrong. I'd run for a new switch if I hadn't already swapped it out. I suppose both could have the same failure, just unlikely. Would love to test it. I tried but was not getting just open or closed readings, so I don't know what I'm supposed to get at which leads in certain switch positions. I know I'm not getting ground to YE/RED from the GEM in the low position and should be.
 
You must log in or register to reply here.

Similar threads

J
Wipers won't work at all
  • jpfox
  • May 8, 2025
  • Fox 5.0 Mustang Tech
Replies
10
Views
561
Fox 5.0 Mustang Tech May 16, 2025
nickyb
2
Electrical mayhem
  • 2000ElectricGreen
  • Mar 13, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
2
Views
276
1996 - 2004 SN95 Mustang -General/Talk- Mar 24, 2026
2000ElectricGreen
2
P
2000 GT Intermittent Wipers Not Working
  • Pinellas50
  • Apr 9, 2024
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
2
Views
557
1996 - 2004 SN95 Mustang -General/Talk- Jun 17, 2024
Pinellas50
P
1
Electrical 1985 mustang gt Led conversion trouble
  • 1985fox
  • Jan 5, 2026
  • Fox 5.0 Mustang Tech
Replies
10
Views
633
Fox 5.0 Mustang Tech Jan 15, 2026
1985fox
1
H
  • Locked
01 Cobra low speed & intermittant wipers not working
  • Happster
  • Oct 16, 2021
  • SN95 4.6L Mustang Tech
Replies
3
Views
835
SN95 4.6L Mustang Tech Oct 27, 2021
Noobz347
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?