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Discussion Starter #1
I bought a 69 Mustang Coupe and now i'm trying to sort few problems.

Biggest problem right now is that blinkers don't work so i can't go on a road with it.
All other electrics is working ok, except dash light. When i push the rod for a left or right turn there is no sound, but i can see the arrows blinking fast. It starts to blink 2 seconds after i push the rod. I can also see that interior light and back lights are blinking a little bit too but blinkers itself don't work at all.
Looks like there is electrical shortage somewhere or you suspect something else?
I opened the steering wheel to see what's there and here is a picture. Yellow wire is connected to a plastic, which is broken. Is this important for something?


My other problem is ignition. When i push the key into ignition and turn it, the whole ignition turns with it. I need to hold the housing and turn the key to make it work. I also don't see any lights on a dash to tell me if i have contact or not.
 

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Yellow wire is for the horn. It is supposed to have a spring under it, and when you push the horn button there is a contact plate that makes contact with it and the horn sounds.


The reason the ignition switch is turning is the housing is lose or damaged. Google how to replace turn signal mechanism and also how to remove and replace the ignition switch. YouTube will probably have it or use the Search function in the threads to see if someone here has done those.


If none of the dash lights work it could be a fuse or the 5 VDC regulator on the back of the instrument panel, do the gauges work and just not the lights?


Do you have a wiring diagram for the car as you'll need one to see where everything is supposed to be connected to.


Hope that helped.
 

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If none of the dash lights work it could be a fuse or the 5 VDC regulator on the back of the instrument panel, do the gauges work and just not the lights?
Instrument voltage regulator (IVR) has nothing to do with the operation of the instrument cluster illumination lamps.

Paul
 

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I bought a 69 Mustang Coupe and now i'm trying to sort few problems.

Biggest problem right now is that blinkers don't work so i can't go on a road with it.
All other electrics is working ok, except dash light. When i push the rod for a left or right turn there is no sound, but i can see the arrows blinking fast. It starts to blink 2 seconds after i push the rod. I can also see that interior light and back lights are blinking a little bit too but blinkers itself don't work at all.
Looks like there is electrical shortage somewhere or you suspect something else?
Test:
Remove the TS flasher from its connector (wires should be ORG/YEL and BLU) and jumper the two terminals together with a short piece of wire, paper clip, etc. Turn on the ignition switch and manually move the turn signal switch lever each way while someone observes if any of the TS lamps on the car light as well as the indicators in the dash. Do not hold in either direction for more than a few seconds (in case you do have a short).

Paul
 

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Discussion Starter #6
I checked the fuse box. Looks good. If i make a left turn, i can see the left green arrow blinking, i can also see BOTH rear lights blinking. Front blinkers don't work at all, bulbs are fine. So it looks like a shortage somewhere, switch is ok.
 

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I checked the fuse box. Looks good. If i make a left turn, i can see the left green arrow blinking, i can also see BOTH rear lights blinking. Front blinkers don't work at all, bulbs are fine. So it looks like a shortage somewhere, switch is ok.
Did you do the test?

Paul
 

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Discussion Starter #9
Not yet. I don't really dare to make a short like that. What will this test tell me?

Could all this be only a mass problem?
 

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Not yet. I don't really dare to make a short like that. What will this test tell me?

Could all this be only a mass problem?
Dont understand your last sentence.

The test bypasses the flasher and tells you if the problem is in the flasher unit or not. Are you certain you dont have the emergency flasher switch ON?

Paul
 

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So it looks like a shortage somewhere, switch is ok.
How do you know the switch is okay? Have you checked continuity with an Ohmmeter?

With the turn signal switch connector disconnected, and probing the half connected to the switch with the RED lead on the BLUE wire, probe the ONG/BLU and WHI/BLU with the BLACK lead. You should have continuity with the turn signal switch in the RIGHT position only.

Probing the GRN/ONG and GRN/WHI with the BLACK lead you should have continuity with the turn signal switch in the LEFT position only.

Lastly, probing the turn signal switch connector GREEN wire with the RED lead, and the GRN/ONG and ONG/BLU with the BLACK lead. You should have continuity with the turn signal switch in the NEUTRAL position only.

These tests will verify the condition of your turn signal switch.:yoho:
 

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Discussion Starter #12
Ok, i will test that later. Right now i found out that the front right turn bulb connector (harness) was destroyed and hanging in the air so i must replace that too.
 
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