• Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-

Need Help identifying this small black box

  • Thread starter Thread starter Cholly2991
  • Start date Start date May 28, 2025
C

Cholly2991

Member
May 28, 2025
9
2
13
Rochester Ny
May 28, 2025
#1
  • May 28, 2025
  • #1
I have a 2004 mustang Gt with the 4.6 motor I am trying to identify this small black box that was self tapped into my fire wall it’s definitely aftermarket. It’s connected to my main harness in the engine bay. I have zero clue what it is and it has little to no branding/markings on it. If anyone has any idea of what it might be I’d love the help
 

Attachments

  • IMG_FC2F1B75-6F44-4F3C-8043-07B6A61B0E5F.webp
    88.9 KB · Views: 79
  • IMG_A9C865F9-13BE-4F94-8A2F-3CA7F37FB35C.webp
    73 KB · Views: 75
  • IMG_0443.webp
    111.1 KB · Views: 82
  • IMG_0442.webp
    127.3 KB · Views: 65

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
Admin Dude
Jan 4, 1985
42,928
21,103
234
Box behind Walmart
May 28, 2025
#2
  • May 28, 2025
  • #2
It [might] be a Mass Air Flow extender.

Can you tell if it's tied in with MAF wiring?
 
C

Cholly2991

Member
May 28, 2025
9
2
13
Rochester Ny
May 28, 2025
#3
  • May 28, 2025
  • #3
Noobz347 said:
It [might] be a Mass Air Flow extender.

Can you tell if it's tied in with MAF wiring?
Click to expand...
I honestly don’t know i haven’t looked to deep into the where the harness goes. It looks like an engine harness the power came from a red wire with a yellow tracer. I took some more photos I’ll attach those. I don’t know what wires it hooks into I’ll check soon I just have to pull apart that harness to check.
 

Attachments

  • IMG_0449.webp
    189.6 KB · Views: 71
  • IMG_0448.webp
    138.7 KB · Views: 63
  • IMG_0447.webp
    120.8 KB · Views: 67
  • IMG_0446.webp
    169.1 KB · Views: 62

gkomo

now i can hopefully expect to receive the shaft
Aug 2, 2024
2,128
1,366
133
San Diego, CA
May 28, 2025
#4
  • May 28, 2025
  • #4
What are the numbers below the wires? May be able to look it up online if its a part number or something.
 
C

Cholly2991

Member
May 28, 2025
9
2
13
Rochester Ny
May 28, 2025
#5
  • May 28, 2025
  • #5
gkomo said:
What are the numbers below the wires? May be able to look it up online if its a part number or something.
Click to expand...
They aren’t part numbers they’re all on each thing on the circuit board. I have a part number on the back but it doesn’t come back to anything.
 

91AOD5.0LX

I have a slight sag in my rear
5 Year Member
Feb 20, 2021
1,029
947
133
Lake George NY
May 28, 2025
#6
  • May 28, 2025
  • #6
Do you know anything about the history of the vehicle regarding previous ownership.
I ask because that looks like a tracking unit (black box) used for fleet management (location, fuel, speed, etc) or Security device (GPS locator) or repossession tracker.

Check [if possible] if the wiring goes to the battery or the ECU.

Battery connection can indicate a possible tracking/security device and ECU connection possibly a performance tracker.

Just thinking out loud….
 
Last edited: May 28, 2025

RaggedGT

Been here over a DECADE and still no CT
Mod Dude
Jul 20, 2014
4,733
3,175
203
Taylorsville ky
May 28, 2025
#7
  • May 28, 2025
  • #7
Does it have an aftermarket key fob/alarm/remote start system?
 
C

Cholly2991

Member
May 28, 2025
9
2
13
Rochester Ny
May 28, 2025
#8
  • May 28, 2025
  • #8
91AOD5.0LX said:
Do you know anything about the history of the vehicle regarding previous ownership.
I ask because that looks like a tracking unit (black box) used for fleet management (location, fuel, speed, etc) or Security device (GPS locator) or repossession tracker.

Check [if possible] if the wiring goes to the battery or the ECU.

Battery connection can indicate a possible tracking/security device and ECU connection possibly a performance tracker.

Just thinking out loud….
Click to expand...
I honestly was wondering the same thing if you look I show where the wires go I the red and black were power and green and white look like they’re connected were spliced in to both ends of a cut wire I’m gonna do some more investigating into what wire it breaks the connection for I’ll post it when I know.
 
Reactions: 91AOD5.0LX
C

Cholly2991

Member
May 28, 2025
9
2
13
Rochester Ny
May 28, 2025
#9
  • May 28, 2025
  • #9
RaggedGT said:
Does it have an aftermarket key fob/alarm/remote start system?
Click to expand...
The key I have is original and so is the fob. I’ve only had the car for a couple years. So it could’ve been lost before i owned it.
 
Reactions: RaggedGT
C

Cholly2991

Member
May 28, 2025
9
2
13
Rochester Ny
May 28, 2025
#10
  • May 28, 2025
  • #10
Cholly2991 said:
I honestly was wondering the same thing if you look I show where the wires go I the red and black were power and green and white look like they’re connected were spliced in to both ends of a cut wire I’m gonna do some more investigating into what wire it breaks the connection for I’ll post it when I know.
Click to expand...
It’s a green wire with a white tracer
 

gkomo

now i can hopefully expect to receive the shaft
Aug 2, 2024
2,128
1,366
133
San Diego, CA
May 28, 2025
#11
  • May 28, 2025
  • #11
Cholly2991 said:
They aren’t part numbers they’re all on each thing on the circuit board. I have a part number on the back but it doesn’t come back to anything.
Click to expand...
Well what is it?
 
C

Cholly2991

Member
May 28, 2025
9
2
13
Rochester Ny
May 28, 2025
#12
  • May 28, 2025
  • #12
Does anyone know the name of this connector, I marked it with an arrow. I’m trying to narrow what wire that box goes to and it’s a green wire with a white tracer. I can’t figure out what that connector is so if anyone can provide any clues I’d appreciate it.
 

Attachments

  • IMG_0448.webp
    460.2 KB · Views: 77
  • IMG_0447.webp
    120.8 KB · Views: 65
  • IMG_0449.webp
    625 KB · Views: 143
  • IMG_0446.webp
    169.1 KB · Views: 76
C

Cholly2991

Member
May 28, 2025
9
2
13
Rochester Ny
May 28, 2025
#13
  • May 28, 2025
  • #13
gkomo said:
Well what is it?
Click to expand...
ST1028-002 RB DSG PUG EXPERT1S 2009
 

gkomo

now i can hopefully expect to receive the shaft
Aug 2, 2024
2,128
1,366
133
San Diego, CA
May 28, 2025
#14
  • May 28, 2025
  • #14
Is the car an automatic? ChatGPT says it could be some sort of shift controller
 

gkomo

now i can hopefully expect to receive the shaft
Aug 2, 2024
2,128
1,366
133
San Diego, CA
May 28, 2025
#15
  • May 28, 2025
  • #15


 
C

Cholly2991

Member
May 28, 2025
9
2
13
Rochester Ny
May 28, 2025
#16
  • May 28, 2025
  • #16
gkomo said:
Is the car an automatic? ChatGPT says it could be some sort of shift controller
Click to expand...
It’s Manual
 
9

99SvtCobraTx

New Member
Jul 21, 2025
1
0
1
Texas
Jul 21, 2025
#17
  • Jul 21, 2025
  • #17
Did you ever figure this out , I found the same box on my 99 cobra
 
You must log in or register to reply here.

Similar threads

E
P1633
  • EmberGT04
  • Jul 18, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
2
Views
209
1996 - 2004 SN95 Mustang -General/Talk- Jul 22, 2025
EmberGT04
E
0
V6 to V8 Swap info
  • 02_2v_Curtis
  • Jan 11, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
0
Views
582
1996 - 2004 SN95 Mustang -General/Talk- Jan 11, 2026
02_2v_Curtis
0
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
477
1996 - 2004 SN95 Mustang -General/Talk- Nov 7, 2025
04newedge-
0
A
Electrical Help Identify wires/connections engine bay passenger side firewall (unused)
  • afjLX
  • Dec 4, 2024
  • Fox 5.0 Mustang Tech
Replies
8
Views
1K
Fox 5.0 Mustang Tech Dec 10, 2024
afjLX
A
Engine Information that is Needed When You Post a "Car is not Running" or "Car is Running Poorly" Thread
  • AeroCoupe
  • Apr 28, 2025
  • Fox 5.0 Mustang Tech
  • 2
Replies
29
Views
1K
Fox 5.0 Mustang Tech May 4, 2025
Bullitt347
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1996 - 2004 SN95 Mustang -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?