• Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-

Instrument cluster lights not working

  • Thread starter Thread starter derek2079
  • Start date Start date Mar 9, 2020

derek2079

Member
Jan 21, 2020
34
8
18
Salt Lake City, Utah
Mar 9, 2020
#1
  • Mar 9, 2020
  • #1
I checked fuses and changed headlight switch. No comprende.
 

Olivethefet

I will own your nuts! LOL
5 Year Member
May 17, 2018
2,596
1,790
143
Enterprise AL
Mar 10, 2020
#2
  • Mar 10, 2020
  • #2
I've had mine apart so long I cant remember how the dimmer switch functions. If it worked correctly would you just twist the headlight switch to dim or brighten the dash light? I know the rheostat can fail, but you said you changed the switch. It's a little more work, but if you have changed the switch and checked the fuses the next thing to do would be to get out the multi meter and start checking for voltage. I would start at the fuse block and work my way up to the dash lights. On the opposite hand you could pull one of the bulbs from the instrument cluster and check for voltage there. If you dont have voltage then start working your way back until you find it.
 

horse sence

15 Year Member
Nov 29, 1999
12,184
8,006
233
Wile Coyote's stunt double
Mar 10, 2020
#3
  • Mar 10, 2020
  • #3
derek2079 said:
I checked fuses and changed headlight switch. No comprende.
Click to expand...
Start by testing the fuse at both sides ,somtimes the contacts rust and must be cleaned .
 

derek2079

Member
Jan 21, 2020
34
8
18
Salt Lake City, Utah
Mar 10, 2020
#4
  • Mar 10, 2020
  • #4
now my blinkers aren’t working. What a surprise. I bought a package of replacement fuses on eBay thinking it would do the trick in reality only made things worse.
 

derek2079

Member
Jan 21, 2020
34
8
18
Salt Lake City, Utah
Mar 10, 2020
#5
  • Mar 10, 2020
  • #5
The problem is I have a bag of fuses with no labels on the fuses that are similar in size so I have no way of knowing what fuse goes where. But I can tell that my heater is out now so I can definitely say it is fuse related. Due to my guess work on what fuse goes where. This car won’t win. I will win every time. Just a matter of time and effort.
 

derek2079

Member
Jan 21, 2020
34
8
18
Salt Lake City, Utah
Mar 11, 2020
#6
  • Mar 11, 2020
  • #6
Well holy sheet, after locking myself out of my car and then getting back in. I looked at the fuses and they do say what amp they are so with a little bit of elbow grease I solved the equation. Everything is working again at 100% even the dash lights and heater. Thanks boys and girls for your input.
 
Reactions: Olivethefet

derek2079

Member
Jan 21, 2020
34
8
18
Salt Lake City, Utah
Mar 12, 2020
#7
  • Mar 12, 2020
  • #7
So here's a question I'm hoping someone can help me out with that is satisfactory. I don't know what fuses are making correct contact into the built in fuse box in my 67. So I was going to buy a volt tester to test but before I did that I wanted an explanation of exactly how I would know how to correctly use it. First off the fuses are brand new and appear to be working however I had to twist the fuses a little to get power to my car to make the correct contact. So my question is in relation to the statements I've made, how do I use a volt tester to make sure the fuse is seated properly and how would a volt tester tell me if the fuse is seated correctly. I don't want to take the fuses out because they break easy and with a little bit of twisting it seemed to have done the trick. Which leads me to my next question. Would a volt tester even help?
 

derek2079

Member
Jan 21, 2020
34
8
18
Salt Lake City, Utah
Mar 15, 2020
#8
  • Mar 15, 2020
  • #8
Problem solved.

Okay so I found the problem and it might shock some people to know who are having the same problem that the problem was the fuses were to loose, not tight enough. So I used a flat head screwdriver and wedged the contacts closer together.
 
Reactions: Olivethefet
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
117
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- May 31, 2026
86SilverFox
8
S
Electrical Foxbody Dash & Hazard lights not working
  • sjmcr
  • Jun 30, 2025
  • Fox 5.0 Mustang Tech
Replies
6
Views
615
Fox 5.0 Mustang Tech Jul 27, 2025
Mindseye007
G
68 Mustang - Cluster and turning signal lights intermittent after upgrading to LED
  • grantosmond
  • Jun 14, 2025
  • 1965 - 1973 Classic Mustangs -General/Talk-
Replies
0
Views
160
1965 - 1973 Classic Mustangs -General/Talk- Jun 14, 2025
grantosmond
G
S
Electrical No dash lights
  • slojoexxx
  • Dec 11, 2025
  • 1994 - 1995 Specific Tech
Replies
0
Views
129
1994 - 1995 Specific Tech Dec 11, 2025
slojoexxx
S
T
2002 V6 3.8L Help Me
  • TheIncompetentMechanic
  • Apr 4, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • 2 3
Replies
50
Views
686
1996 - 2004 SN95 Mustang -General/Talk- May 12, 2026
TheIncompetentMechanic
T
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
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?