Grounding issue?

8

86SilverFox

New Member

Jun 2, 2025

6

0

1

Kentucky

May 16, 2026

#1

• May 16, 2026

• #1

1986 LX 5speed

Had an issue for awhile but don’t drive much. Everything works as it should and drives fine. When I turn on the headlights the seat belt buzzer stays constant, both turn indicators and bright light indicator lights up, tach and fuel gauge stop working. Instrument cluster lights do not work but fuse is fine. I and not knowledgeable in electrics at all.

Any suggestions?

 

AeroCoupe

lube between the nut and the face. I know my lubes

Founding Member

Oct 28, 2001

5,774

3,910

183

Claremore, OK

May 16, 2026

#2

• May 16, 2026

• #2

Get this and a DVM.

Color Wiring Diagrams

https://www.ebay.com/itm/324526616152?mkcid=1&mkrid=711-53200-19255-0&siteid=0&campid=5335821607&customid=&toolid=10001&mkevt=1

 

General karthief

wonder how much it would cost to ship you a pair

Mod Dude

Aug 25, 2016

27,826

10,507

203

polk county florida

May 17, 2026

#3

• May 17, 2026

• #3

Grounds would be my first thought. Without some background on this car I would say check the ground on the back of the drivers side head to firewall,
Oh, got any LED bulbs swapped ?

 

nickyb

I gotta say i never painted my nuts, Never Ever

15 Year Member

Apr 3, 2009

2,964

1,613

153

nevada

May 17, 2026

#4

• May 17, 2026

• #4

Suggestions don't turn on the headlights?
But seriously pull the headlight switch ,check wires,connectors.

 

Reactions: General karthief

8

86SilverFox

New Member

Jun 2, 2025

6

0

1

Kentucky

May 31, 2026

#5

• May 31, 2026

• #5

I have had no luck locating what is causing the issue. All ground I can find seem to be good. Located this today. The 2nd wire coming out of #2 spot on the instrument cluster goes no where. The black and green wire is intact but the black is not? Car was originally a v6 but now is v8 and has a ford performance fuel injection harness.

 

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