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

Electrical Mystery spliced fuse at Ignition Switch

  • Thread starter Thread starter ras50gt
  • Start date Start date Jun 6, 2022

ras50gt

Member
Oct 25, 2005
200
2
19
Jun 6, 2022
#1
  • Jun 6, 2022
  • #1
Been forever, but finally have my fox back and starting to restore. Car has been sitting for quite a bit, did a few things and sure enough got her to fire up . Came back that night to try again, nothing. Power acting funky and remembered back in the day reading posts about the ignition switch.

Found the good ol ignition switch coming apart. Will pick one up tomorrow. Looking at the ignition switch I noticed an inline fuse spliced into the second large yellow wire. It's a 20 amp fuse with a red wire. The fuse was blown. Couldn't really tell where the spliced wire goes from there.

Any ideas what this could be? I don't know how long it has been blown, but do I even attempt to put in a new fuse? I guess I can try taking more of the dash apart to see its destination.
 

Attachments

  • 16544963896606639987501273718834.webp
    120.1 KB · Views: 142
  • 16544967789553811447714247302746.webp
    71.4 KB · Views: 136

TIGGER

Founding Member
Mar 6, 2000
877
244
104
Portland, OR
Jun 6, 2022
#2
  • Jun 6, 2022
  • #2
Does the car have an alarm added?
 

ras50gt

Member
Oct 25, 2005
200
2
19
Jun 6, 2022
#3
  • Jun 6, 2022
  • #3
TIGGER said:
Does the car have an alarm added?
Click to expand...
No alarm that I know of although I'm thinking maybe a previous owner added one. Every now and then when a battery is reconnected, I hear a chirp.
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,249
17,934
224
Massachusetts
Jun 6, 2022
#4
  • Jun 6, 2022
  • #4
Sounds to me like there is an alarm somewhere.
 

02 281 GT

Agreed...My wife has great Boobs
15 Year Member
Feb 3, 2009
3,208
1,972
194
Cabot, AR
Jun 6, 2022
#5
  • Jun 6, 2022
  • #5
Someone installed something in the past that needed a switched 12V source. 20 amps is too high a rating for gauges, so I would agree with the alarm assessments.
 
You must log in or register to reply here.

Similar threads

C
Electrical HELP! 1989 5.0 Stick, Voltage Bleed onto Ignition Trigger wire
  • ChickenDeluxe
  • May 14, 2026
  • Fox 5.0 Mustang Tech
Replies
7
Views
221
Fox 5.0 Mustang Tech May 24, 2026
ChickenDeluxe
C
Resolved Ignition switch questionable
  • Dontknowchit
  • Mar 14, 2025
  • Fox 5.0 Mustang Tech
Replies
13
Views
669
Fox 5.0 Mustang Tech Jun 18, 2025
General karthief
F
2003 Mach 1 - F1.28 Fuse blows on KOEO
  • fr500mach
  • Jul 14, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
3
Views
209
1996 - 2004 SN95 Mustang -General/Talk- Jul 19, 2025
fr500mach
F
F
Electrical From scratch: alternator wiring
  • fox racer v2
  • Jun 23, 2025
  • Fox 5.0 Mustang Tech
Replies
0
Views
568
Fox 5.0 Mustang Tech Jun 23, 2025
fox racer v2
F
S
Crank no start, I’m stumped!
  • Seth Brogan
  • May 18, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
10
Views
942
1996 - 2004 SN95 Mustang -General/Talk- May 14, 2026
BossHorseGirl
B
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?