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

A/C compressor clutch

  • Thread starter Thread starter junkyardwarrior
  • Start date Start date Jun 9, 2018
J

junkyardwarrior

Well-Known Member
Jan 10, 2011
400
113
63
Jun 9, 2018
#1
  • Jun 9, 2018
  • #1
'92 GT, 5.0 all stock. Factory installed a/c with Nippon Denso compressor.

A/C inoperative. Jumpered low pressure switch, clutch does not engage. Have +12v at the BK/Y wire at the clutch. Checked ground (BK at the clutch)-and no ground. Where does it ground to? I followed the A/C clutch harness back as far as I could, and the BK wire disappears into the harness underneath the starter solenoid. At the 2 pin connector, BK/Y remains-but BK from the compressor turns into what appears to be a BK/W wire which , If I back probe the BK wire at the clutch and run a jumper to the negative (-) battery terminal, the clutch will come on. I have a bad ground, but I'm not sure where the other end of the BK wire goes so that I can investigate?
 
Last edited: Jun 9, 2018

jrichker

StangNet's favorite TOOL
In Remembrance. Thank you for your contributions
Mar 10, 2000
27,512
2,811
234
Dublin GA
Jun 10, 2018
#2
  • Jun 10, 2018
  • #2
There is a short harness that connects directly to the compressor that contains the surge damper diode and the ground wire. Peel the plastic loom off and see if the jumper wire is broken off under the loom.
 
You must log in or register to reply here.

Similar threads

D
Electrical/engine bay harness questions
  • djj62478
  • May 29, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
7
Views
150
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Saturday at 10:25 AM
djj62478
D
New fuel pump relay
  • Scrapla347
  • Nov 3, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
12
Views
770
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Nov 8, 2025
Scrapla347
82 Gen 1 Coyote Swap AC Questions...
  • thinkfaster
  • Aug 14, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
1
Views
297
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Aug 15, 2025
thinkfaster
8
Did I fry something messing with my ignition?
  • 85gtCOBRA
  • Oct 18, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 2
Replies
30
Views
963
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Nov 15, 2025
85gtCOBRA
8
D
1985 Mustang GT Battery Wiring and Grounds
  • DienstXIV
  • Dec 22, 2024
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
2
Views
791
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Dec 23, 2024
85GTStangGuy
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
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?