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

Headlight Switch Issue

  • Thread starter Thread starter Dbmann
  • Start date Start date Dec 29, 2017
D

Dbmann

New Member
Dec 29, 2017
1
0
1
Dec 29, 2017
#1
  • Dec 29, 2017
  • #1
Hi I have a 1988 GT when I turn the headlights on my gauges don't work the lights for the gauges don't work the dim switch acts all funky windshield wipers don't work. Please help.
 

Blown88GT

Founding Member
Nov 13, 1999
2,283
524
164
Palm Beach Gardens, FL
Dec 29, 2017
#2
  • Dec 29, 2017
  • #2
You have many things wrong. You will need 1988 EVTM; check eBay.
 

jrichker

StangNet's favorite TOOL
In Remembrance. Thank you for your contributions
Mar 10, 2000
27,512
2,813
234
Dublin GA
Dec 29, 2017
#3
  • Dec 29, 2017
  • #3
Dbmann said:
Hi I have a 1988 GT when I turn the headlights on my gauges don't work the lights for the gauges don't work the dim switch acts all funky windshield wipers don't work. Please help.
Click to expand...
Does your car have this problem?
The secondary power ground is between the back of the intake manifold and the driver's side firewall. It is often missing or loose. It supplies ground for the alternator, A/C compressor clutch and other electrical accessories such as the gauges. The clue to a bad ground here is that the temp gauge goes up as you add electrical load such as heater, lights and A/C.
 
You must log in or register to reply here.

Similar threads

8
Grounding issue?
  • 86SilverFox
  • May 16, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
4
Views
180
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- May 31, 2026
86SilverFox
8
Electrical 1986 Mustang GT Multifunction Switch Question
  • Willybill32
  • Oct 26, 2025
  • Fox 5.0 Mustang Tech
Replies
11
Views
522
Fox 5.0 Mustang Tech Nov 22, 2025
Willybill32
M
Need help!
  • Masonevans726
  • Dec 17, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
1
Views
259
1996 - 2004 SN95 Mustang -General/Talk- Dec 17, 2025
Masonevans726
M
M
Electrical 1989 mustang dash lights
  • Mustang_65-87
  • May 9, 2025
  • Fox 5.0 Mustang Tech
Replies
12
Views
2K
Fox 5.0 Mustang Tech May 24, 2025
Mustang_65-87
M
A
Resolved Windshield wiper troubleshooting - Wiper turns OFF when Headlights turned ON
  • afjLX
  • Feb 9, 2025
  • Fox 5.0 Mustang Tech
Replies
10
Views
763
Fox 5.0 Mustang Tech Mar 30, 2025
General karthief
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?