Turn signals not working.. Now fixed but have questions.. - Ford Mustang Forums : Corral.net Mustang Forum
LinkBack Thread Tools Display Modes
post #1 of 2 Old 11-28-2011, 03:55 PM Thread Starter
Registered User
Trader Feedback: (0)
Join Date: Feb 2005
Location: Kennewick, Wa
Posts: 193
Turn signals not working.. Now fixed but have questions..

For those who may encounter the same problem I'll go through the fix then get to the question..

This weekend I finally got around to taking on my no turn signal problem. Bottom line was the turn signal switch did nothing.. Hazard lights happily blinked away so I know the wiring to the lights was good. I had tried 2 other flasher units known to be good but that didn't work either.

The car is an 87 converted from 2.3 auto to 5.0 5 speed. So as you can guess it's been torn apart but put together again.. Odd issues are expected..

Wiring diagram in hand I started checking with the multimeter.

I starred by testing fuse #5.. I found 12v there and the fuse is good. Move on to the flasher can.. 12v on the purple orange wire coming from the fuse. Flasher output is a blue wire. Moving on to the hazard switch I still see 12v on the blue wire coming from the flasher unit. 12v on the orange/yellow line out of the hazard switch going to the multi function switch.. Hazard witch cuts power to the orange/yellow to the turn signal switch as it should when engaged.

At this point I was starting to think I had a bad multi function switch but I was wrong.. When I disconnected the turn signal plug block from the MF switch I noticed the orange/yellow power feed wire was not fully seated.. closer inspection showed that the pin retaining tab was broken letting the wire push back out of the block when it was plugged in.. I thought I could swap in another block from a 2nd dash harness I have but the exact same pin was broken on that one too. How odd..

I settled for holding the pin in with some silicone. Now with the pin seated the turn signals are working. Easy fix but rather difficult to find.

The question is are broken pin tabs on the plug blocks a common issue?

Hope this helps someone with the same problem.

William's Law--
There is no mechanical problem so difficult that it
cannot be solved by brute strength and ignorance.
sscherin is offline  
Sponsored Links
post #2 of 2 Old 11-28-2011, 05:24 PM
Registered User
88mouse's Avatar
Trader Feedback: (1)
Join Date: Jan 2010
Location: Mooresville nc
Posts: 49
Fixed mine today. Somebody had swapped the orange wire around.(?)

88mouse is offline  
Sponsored Links


Quick Reply

Register Now

In order to be able to post messages on the Ford Mustang Forums : Corral.net Mustang Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Similar Threads
Thread Thread Starter Forum Replies Last Post
Yet another Fox turn signal problem Kranium31 General Mustang Tech 20 05-28-2011 12:37 AM
Turn Signals not working fastfed General Mustang Tech 8 05-11-2005 10:34 AM
No turn signals, radio, clock or power mirrors??? gr8_96gt GT & SOHC 10 12-20-2001 02:21 AM
turn signal lights not working!!! dimitrios 5.0/5.8 Engine Tech 0 12-17-2001 05:00 PM
AHHH no turn signals gr8_96gt GT & SOHC 8 12-04-2001 11:29 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome