• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

Electrical O2 harness repin

  • Thread starter Thread starter Mustang5L5
  • Start date Start date Jan 27, 2019
Prev
  • 1
  • 2
First Prev 2 of 2
F

Fox2newedge

Member
Feb 13, 2024
24
2
13
Laurel, Florida
Jul 23, 2025
#21
  • Jul 23, 2025
  • #21
Ok, I will give it a try once I get the harness back in the car (I took it out to clean it up). If there is power, what is the solution?
Thanks again!
 
F

Fox2newedge

Member
Feb 13, 2024
24
2
13
Laurel, Florida
Jul 23, 2025
#22
  • Jul 23, 2025
  • #22
Also, I found this article with reference to adding some leads from the trans harness and fuel pump relay. Have you seen this and any chance you may know if it's accurate?

https://stangnet.com/2002/01/23/mustang-mass-air-conversion/
 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
Admin Dude
Jan 4, 1985
43,432
21,637
234
Box behind Walmart
Jul 23, 2025
#23
  • Jul 23, 2025
  • #23
Fox2newedge said:
Also, I found this article with reference to adding some leads from the trans harness and fuel pump relay. Have you seen this and any chance you may know if it's accurate?

https://stangnet.com/2002/01/23/mustang-mass-air-conversion/
Click to expand...

That thread is for converting a Speed Density Harness to Mass Air [specifically].
 
F

Fox2newedge

Member
Feb 13, 2024
24
2
13
Laurel, Florida
Jul 24, 2025
#24
  • Jul 24, 2025
  • #24
Yes, but about half way down he talks about splicing into the fuel pump relay and pinning it to pin 19 and then putting jumpers from the org/yel and grn/wht wires in the trans harness to pins 6 and 3 respectively to prevent stalling problems.
I was preparing to do this, as I don't want to have to take the seats/carpet out again, but am not sure if it's necessary or incorrect advice.
Again, thanks for any guidance, it's truly appreciated.
 

AeroCoupe

lube between the nut and the face. I know my lubes
Founding Member
Oct 28, 2001
6,167
4,265
183
Claremore, OK
Jul 24, 2025
#25
  • Jul 24, 2025
  • #25
Pretty sure all the fuel pump relay wiring is over in the driver kick panel.
 
Prev
  • 1
  • 2
First Prev 2 of 2
You must log in or register to reply here.

Similar threads

Electrical Code 29 again
  • Creomod
  • Jul 31, 2026
  • Fox 5.0 Mustang Tech
Replies
7
Views
301
Fox 5.0 Mustang Tech Aug 3, 2026
Creomod
Electrical Ron Francis Headlight / Alternator Harness
  • dan50
  • Apr 30, 2026
  • Fox 5.0 Mustang Tech
Replies
0
Views
287
Fox 5.0 Mustang Tech Apr 30, 2026
dan50
L
Electrical problems with passenger side downstream o2 sensor
  • Lexiii12
  • Sep 14, 2026
  • 2005 - 2014 S-197 Mustang -General/Talk-
Replies
0
Views
99
2005 - 2014 S-197 Mustang -General/Talk- Sep 14, 2026
Lexiii12
L
A
Electrical New O2 sensor harness has no jumpers (91/93)…
  • afjLX
  • Dec 11, 2024
  • Fox 5.0 Mustang Tech
Replies
4
Views
512
Fox 5.0 Mustang Tech Dec 13, 2024
afjLX
A
Resolved 93 Mustang 5.0 - Cranks but does not start
  • dan50
  • Jul 18, 2026
  • Fox 5.0 Mustang Tech
Replies
6
Views
375
Fox 5.0 Mustang Tech Jul 18, 2026
dan50
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 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?