• Mustang Forums
  • Mustang Sound & Shine All

Low voltage at pin connector on alternator

  • Thread starter Thread starter Russ Cochran
  • Start date Start date Aug 24, 2019

Russ Cochran

New Member
Nov 26, 2016
13
0
1
North GA Mountains
Aug 24, 2019
#1
  • Aug 24, 2019
  • #1
04 Mustang has low voltage at the pin connector. Battery test 12.5, ignition on pin voltage at 11.45 Any idea what would cause this? Alternator is not getting message to start generating power to battery. BTW new battery and alternator, both test good on bench. No Charge means NO GO. Car is sitting please help if you can.
 
Last edited: Aug 24, 2019
S

Shuttleman83

Active Member
Jun 30, 2019
239
13
28
USA
Sep 7, 2019
#2
  • Sep 7, 2019
  • #2
Alternator / Generator fuse if you have one? Parasitic Draw? Possibly even ECU.
 
You must log in or register to reply here.

Similar threads

Alternator not charging
  • SchwarzStock
  • Jul 6, 2026
  • 1965 - 1973 Classic Mustangs -General/Talk-
Replies
2
Views
152
1965 - 1973 Classic Mustangs -General/Talk- Jul 19, 2026
SchwarzStock
Electrical Ron Francis Headlight / Alternator Harness
  • dan50
  • Apr 30, 2026
  • Fox 5.0 Mustang Tech
Replies
0
Views
267
Fox 5.0 Mustang Tech Apr 30, 2026
dan50
T
Electrical Brown Connector #31
  • ta66
  • Jul 26, 2026
  • Fox 5.0 Mustang Tech
Replies
2
Views
142
Fox 5.0 Mustang Tech Jul 30, 2026
ta66
T
A
P0036 P0056 P0137 P0157 2020 Ford Mustang GT
  • AmkoA
  • Jun 16, 2026
  • 2024+ (S650) Mustang -General/Talk
Replies
0
Views
209
2024+ (S650) Mustang -General/Talk Jun 16, 2026
AmkoA
A
F
Alternator Not Charging
  • Fri Guy
  • Aug 29, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
7
Views
463
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Aug 31, 2025
AeroCoupe
Share:
Bluesky Email Share Link
  • Mustang Forums
  • Mustang Sound & Shine All
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?