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Fox Turn signal flasher keeps failing

  • Thread starter Thread starter keel
  • Start date Start date Jul 9, 2026

keel

Active Member
Aug 23, 2020
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38
Seattle, Wa
Jul 9, 2026
#1
  • Jul 9, 2026
  • #1
My OE turn signal flasher failed about a year ago and since then I have replaced it about 3 or 4 times with generic replacements from the auto parts store. They will get stuck in the on or off position within 2-3 months. They work fine up until that point. Usually tapping on them will get them unstuck temporarily and then they work fine until they get stuck again.

My question is whether or not I have faulty wiring or if these flashers are just junk.
 

General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
Aug 25, 2016
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polk county florida
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#2
  • Jul 9, 2026
  • #2
Plastic flashers or metal?
i don't care for the plastic ones but in my lifetime I've only replaced one flasher all cars included, maybe try a name brand unit.
 

keel

Active Member
Aug 23, 2020
229
80
38
Seattle, Wa
Jul 9, 2026
#3
  • Jul 9, 2026
  • #3
They're metal cases, I've tried one Novita and a few Standard Ignition, all from O'Reilly's. The weird part too is that they have all sounded different.
 

AeroCoupe

lube between the nut and the face. I know my lubes
Founding Member
Oct 28, 2001
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Claremore, OK
Jul 9, 2026
#4
  • Jul 9, 2026
  • #4
Get a digital one.
 

General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
Aug 25, 2016
27,926
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203
polk county florida
Jul 9, 2026
#5
  • Jul 9, 2026
  • #5
AeroCoupe said:
Get a digital one.
Click to expand...
??
 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
Admin Dude
Jan 4, 1985
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#6
  • Jul 9, 2026
  • #6
General karthief said:
??
Click to expand...

There are newer, digital units that [do not care] about what light bulbs you run.

Our OEM units ran and were driven by current. The contacts heat and separate. When the cool, the contact closes again.

On digital units, the contact opens and closes through a timer. It eliminates issues with mismatched bulbs and/or poor current flow.
 

keel

Active Member
Aug 23, 2020
229
80
38
Seattle, Wa
Jul 9, 2026
#7
  • Jul 9, 2026
  • #7
I tried running a digital one and the turn signals wouldn't work at all for some reason.
 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
Admin Dude
Jan 4, 1985
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#8
  • Jul 9, 2026
  • #8
I suspect that you have weak or bad ground.
 
Reactions: AeroCoupe

AeroCoupe

lube between the nut and the face. I know my lubes
Founding Member
Oct 28, 2001
5,888
4,014
183
Claremore, OK
Jul 9, 2026
#9
  • Jul 9, 2026
  • #9
Let me go out and take a picture of the one I put in the Coupe. I stand corrected I just used a CEC heavy duty flasher. It is a clear yellowish color so for some reason I had it in my head it was a digital one. Looked them up and I did not remember a ground wire which mine does not have. This solved my emergency flashers being super slow. The flasher hangs upside down to I rotated the pics to make it easier to read. Just wanted to point that out in case things looked weird.

 
Last edited: Jul 9, 2026
Reactions: keel

keel

Active Member
Aug 23, 2020
229
80
38
Seattle, Wa
Jul 9, 2026
#10
  • Jul 9, 2026
  • #10
Yeah the flasher doesn't have a dedicated ground. Where can I check grounds?
 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
Admin Dude
Jan 4, 1985
43,096
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Box behind Walmart
Jul 9, 2026
#11
  • Jul 9, 2026
  • #11
keel said:
Yeah the flasher doesn't have a dedicated ground. Where can I check grounds?
Click to expand...

I would probably start by making a temp ground to the ground pin on your relay. Just a wire that is grounded really well. Test the relay. If it work then start troubleshooting the ground wire back to the connection or chassis.

A trouble light can help with this.
 
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