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

Electrical Foxbody Dash & Hazard lights not working

  • Thread starter Thread starter sjmcr
  • Start date Start date Jun 30, 2025
  • Tags Tags
    dash lights fox body hazard lights
S

sjmcr

New Member
Jun 30, 2025
3
0
1
California
Jun 30, 2025
#1
  • Jun 30, 2025
  • #1
I have an 88 LX. My headlights and blinkers work but I have no hazard lights. The hazard switch connector is new, as well as the flasher and the fuses are all good. I also have zero dash illumination. I’ve changed the dinner switch, headlight switch connector, even the bulbs inside the instrument cluster. I’m not sure what else to check from this point. Anyone else have this problem?
 
S

sjmcr

New Member
Jun 30, 2025
3
0
1
California
Jun 30, 2025
#2
  • Jun 30, 2025
  • #2
sjmcr said:
I have an 88 LX. My headlights and blinkers work but I have no hazard lights. The hazard switch connector is new, as well as the flasher and the fuses are all good. I also have zero dash illumination. I’ve changed the dinner switch, headlight switch connector, even the bulbs inside the instrument cluster. I’m not sure what else to check from this point. Anyone else have this problem? Update. I took my stereo out and now the dash lights come on, but only when the dimmer switch is turned all the way on. Still no hazard lights though.
Click to expand...
 

General karthief

wonder how much it would cost to ship you a pair
5 Year Member
Aug 25, 2016
27,872
10,542
203
polk county florida
Jul 1, 2025
#3
  • Jul 1, 2025
  • #3
Take a test light and check fuse for the stuff that don't work.
How long have you owned this?
Any wiring modifications?
 
8

88Fox5.0LX

New Member
Jan 19, 2025
1
0
1
Covina, California
Jul 1, 2025
#4
  • Jul 1, 2025
  • #4
sjmcr said:
I have an 88 LX. My headlights and blinkers work but I have no hazard lights. The hazard switch connector is new, as well as the flasher and the fuses are all good. I also have zero dash illumination. I’ve changed the dinner switch, headlight switch connector, even the bulbs inside the instrument cluster. I’m not sure what else to check from this point. Anyone else have this problem?
Click to expand...
Replace the relay.
 
S

sjmcr

New Member
Jun 30, 2025
3
0
1
California
Jul 1, 2025
#5
  • Jul 1, 2025
  • #5
General karthief said:
Take a test light and check fuse for the stuff that don't work.
How long have you owned this?
Any wiring modifications?
Click to expand...
I’ve owned it for 4 years. No wiring modification that I’m aware of as the car has been in my family.
 

AeroCoupe

lube between the nut and the face. I know my lubes
Founding Member
Oct 28, 2001
5,826
3,961
183
Claremore, OK
Jul 1, 2025
#6
  • Jul 1, 2025
  • #6
EVTM for your '88 is here curtesy of @Mustang5L5:

Reference Thread '1988 Mustang EVTM'

Jan 18, 2024
Mustang5L5 submitted a new resource:

1988 Mustang EVTM - Electrical and vacuum troubleshooting manual

1988 Mustang EVTM

SImilar to 1987 and 1989 with minor differences in engine harness. Most non-engine related stuff is identical, such as power windows, HVAC, defrost, etc.
Click to expand...

Read more about this resource...
  • Mustang5L5
  • Replies: 2
  • Forum: Resource Discussion Forum
 
Reactions: General karthief

Mindseye007

5 Year Member
Oct 21, 2020
563
131
63
ontario
Jul 27, 2025
#7
  • Jul 27, 2025
  • #7
sjmcr said:
I have an 88 LX. My headlights and blinkers work but I have no hazard lights. The hazard switch connector is new, as well as the flasher and the fuses are all good. I also have zero dash illumination. I’ve changed the dinner switch, headlight switch connector, even the bulbs inside the instrument cluster. I’m not sure what else to check from this point. Anyone else have this problem?
Click to expand...
Did you make sure the dimmer switch was turned all the way up. Does the interior light work?

Have you checked your ignition switch?

Mustang Ignition Switch (79-93) - LMR.com

1979-93 Ford Mustang ignition switch replacement will get your Mustang starting again!
lmr.com

View: https://youtu.be/i3ZR9ign2bI?feature=shared


You might need this...
https://lmr.com/item/LRS-10843B/1987-1989-mustang-primary-instrument-cluster-circuit-board
With this
https://lmr.com/item/LRS-10843C/1987-1989-mustang-secondary-instrument-cluster-circuit-board

View: https://youtu.be/cZmyqrTrc0w?feature=shared
 
Last edited: Jul 27, 2025
You must log in or register to reply here.

Similar threads

T
Need help 67 hazard flashers not working
  • THS70
  • Jan 21, 2026
  • 1965 - 1973 Classic Mustangs -General/Talk-
Replies
15
Views
672
1965 - 1973 Classic Mustangs -General/Talk- Jan 29, 2026
Noobz347
9
Fox Hazards not working but blinkers do
  • 93fox_c
  • Dec 2, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
1
Views
184
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Dec 2, 2025
AeroCoupe
S
Electrical No dash lights
  • slojoexxx
  • Dec 11, 2025
  • 1994 - 1995 Specific Tech
Replies
0
Views
135
1994 - 1995 Specific Tech Dec 11, 2025
slojoexxx
S
M
Electrical 1989 mustang dash lights
  • Mustang_65-87
  • May 9, 2025
  • Fox 5.0 Mustang Tech
Replies
12
Views
1K
Fox 5.0 Mustang Tech May 24, 2025
Mustang_65-87
M
M
Need help!
  • Masonevans726
  • Dec 17, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
1
Views
222
1996 - 2004 SN95 Mustang -General/Talk- Dec 17, 2025
Masonevans726
M
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?