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

Electrical 89 GT, Front turn signals not illuminating with headlights

  • Thread starter Thread starter FetusLasVegas
  • Start date Start date Oct 10, 2018

FetusLasVegas

Member
Sep 19, 2018
78
4
18
Chicago
Oct 10, 2018
#1
  • Oct 10, 2018
  • #1
The front turn signals work fine as signals/hazards. When I have my running lights or headlights on they do not illuminate.
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,260
17,944
224
Massachusetts
Oct 10, 2018
#2
  • Oct 10, 2018
  • #2
Have to tested the bulbs? They are dual filament, so the parking lamp lighting filament is different from the turn signal filament.

If the bulbs are good, test for power on both leads at the socket. If no power, then will need to trace out wiring
 

General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
Aug 25, 2016
27,932
10,574
203
polk county florida
Oct 10, 2018
#3
  • Oct 10, 2018
  • #3
Check the brown wire at the headlight switch for power out of the switch
 
You must log in or register to reply here.

Similar threads

8
Electrical Turn Signal / Lights Issue
  • 86SilverFox
  • Jun 2, 2025
  • Fox 5.0 Mustang Tech
Replies
7
Views
403
Fox 5.0 Mustang Tech Jun 3, 2025
General karthief
1
Electrical Headlight harness trouble
  • 1985fox
  • Apr 14, 2026
  • Fox 5.0 Mustang Tech
Replies
7
Views
259
Fox 5.0 Mustang Tech Apr 17, 2026
AeroCoupe
S
Electrical Foxbody Dash & Hazard lights not working
  • sjmcr
  • Jun 30, 2025
  • Fox 5.0 Mustang Tech
Replies
6
Views
671
Fox 5.0 Mustang Tech Jul 27, 2025
Mindseye007
1
Electrical 1985 mustang gt Led conversion trouble
  • 1985fox
  • Jan 5, 2026
  • Fox 5.0 Mustang Tech
Replies
10
Views
636
Fox 5.0 Mustang Tech Jan 15, 2026
1985fox
1
T
Need help 67 hazard flashers not working
  • THS70
  • Jan 21, 2026
  • 1965 - 1973 Classic Mustangs -General/Talk-
Replies
15
Views
749
1965 - 1973 Classic Mustangs -General/Talk- Jan 29, 2026
Noobz347
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?