• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 1994 - 1995 Specific Tech

T5 swap ahrness question

  • Thread starter Thread starter Zero_chance
  • Start date Start date Apr 21, 2008

Zero_chance

Founding Member
May 29, 2001
1,244
7
59
Maricopa, AZ
Apr 21, 2008
#1
  • Apr 21, 2008
  • #1
So Ive been putting together all the parts for the t5 swap in my car over the last 6 months or so. Finally tracked down a local T5 out of an 87 for the right price. I wouldve rather gotten an sn95 tranny but that debates done and over with. My question is this... I got a tm40 PCM cheap a while back... do I need to get the tranny harness for the t5? If so, does it need to be the harness for a fox or an sn95? Where exactly does it connect besides the tranny? I thought I read somewhere that without the harness the 5 speed PCM couldnt self test. I also recall that if you stay with the AODE pcm that sometimes it hangs the idle up when it senses theres supposed to be a 1 - 2 shift. Hopefully someone can chime in on this that has done the swap.

(I meant harness in the title, typing too fast)
 

Chythar

Recently finished repairing my rear
20+ Year Stangneter
Aug 26, 2004
2,373
140
113
Foothill Ranch, CA
Apr 21, 2008
#2
  • Apr 21, 2008
  • #2
I know the tranny harness connects right next to the engine harness in the passenger' side rear corner, next to the A/C unit. It doesn't connect anywhere else besides the tranny. This is the same for AODE and T5.

I don't know how different the 87 T5 is, but how will you get yuor speedometer working without a harness? Ours is electronic, with the VSS on the tranny passing on the speed.
 

Zero_chance

Founding Member
May 29, 2001
1,244
7
59
Maricopa, AZ
Apr 21, 2008
#3
  • Apr 21, 2008
  • #3
Good point. So obviously the harness is a necessity but Im wondering if its a 95 harness, will it connect to an 87 tranny and vice versa? Any takers? If the price wasnt so good on this car I shouldve just stuck it out a little longer till I found a 5 speed.
 

Zero_chance

Founding Member
May 29, 2001
1,244
7
59
Maricopa, AZ
Apr 22, 2008
#4
  • Apr 22, 2008
  • #4
No one here with a Fox tranny in their car? Just need to know if I need the 94/95 or 87/93 harness. Im assuming the 94/95 but wasnt sure if the places it connected to on the tranny were the same style connections because Im pretty sure where it connects on the firewall is a different stlye connection.
 
You must log in or register to reply here.

Similar threads

C
5r55s auto to TR3650 Manual swap 4.0 V6
  • Ceskz
  • Feb 24, 2025
  • 2005 - 2014 Specific V6 Tech
Replies
7
Views
1K
2005 - 2014 Specific V6 Tech Mar 27, 2025
89ripper
1999 Mustang GT - No Start- Need help understanding the fuel pump circuit and how it works
  • 99gtGuy
  • Nov 4, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
1
Views
497
1996 - 2004 SN95 Mustang -General/Talk- Nov 7, 2025
04newedge-
0
3
94 Gt to 84 Fox
  • 351C-84'Fox
  • May 16, 2024
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
8
Views
1K
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- May 17, 2024
351C-84'Fox
3
Electrical Use a 94 engine with 89 GT wiring and A9L ECU in non-Ford chassis?
  • Wallyman
  • Apr 8, 2024
  • Fox Engine Swaparoo
Replies
11
Views
2K
Fox Engine Swaparoo Apr 25, 2024
AeroCoupe
S
Requesting Guidance for 306 motor swap - Fuel? - SD? MAF?
  • So_Flo
  • Jul 26, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 2
Replies
32
Views
2K
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jan 4, 2026
Mcmahst
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 1994 - 1995 Specific 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?