Turn Signal/Hazard Flasher Relay (1 Viewer)

[Coolerman]

I tried combining the two L-terminals and got mixed results. The turn signals worked fine, but once I switched on the hazards, I got nothing.

I did notice that the two solenoids in the old relay were electrically tied together via a capacitor. Is the capacitor (draining/charging) what generates the flashing/blinking?

So you attached the Green and the Green/Blue wire from the harness to the L of the new flasher and got nothing on the Hazard side? That would indicate an issue in the Hazard switch...

Yes the capacitor ( and a resistor) are what creates the timing of the flashes. Normally it is the capacitor that fails causing the flasher to stop working. Unfortunately I have never located a replacement. The value of that cap is a mystery though I bet a 2200uf 16V cap would be a good place to start.

 

[davegonz]

I cleaned and rebuilt the hazard switch and it was working fine before all of this.

 

[davegonz]

Still no luck with the hazards, but I was able to solve an intermittent problem with one of the front turn signals not working (needed a better ground path).

I'm going to trace back the second power (yellow path in pic) source on the hazard switch to see if I'm getting power there. That might explain why the turn signals work (separate power source) and the hazards don't.

 

[Coolerman]

Yes that would explain it...

 

[davegonz]

I got the idea from one of your FJ40 threads.

I just hope that I don't have that hidden fuse holder that's behind the dash in FJ40's.

 

[Megadoomer]

Forgive me if I missed it, but are you using LED bulbs as replacements? That would be and issue of not enough resistance for the flasher.

 

[davegonz]

No LED's...yet.

 

[davegonz]

Well, I checked the voltage on the second power wire and am only getting 8 volts. Weird. I jumpered power over from the turn signal power feed and the hazards work.

 

[onemanarmy]

Gonna bump this back up...

So my horn mysteriously quit working one day. I took the steering wheel off to look around, all looks good. Put the steering wheel back on and now I have no brake lights or turn signals. All running lights work, and hazards work, as they have been.
Where should I start? Do the turn signals operate on a separate circuit from the hazards? It would appear so, in my case. All wiring is factory and unmolested.

Thanks

Edit....nevermind....found a loose connector in the harness from where I was troubleshooting.

Still no horn though.

 

[wngrog]

I’ve found all blinker issues to be grounds in the lights. My hazards work strong but my Blinkers are weak and sporadic. In fact, if I use the headlights and the Blinkers at the same time the Blinkers don’t work......but hazards do.

Not sweating it though. It’s 41 years old. People can chill.

 

[yelmarb]

Hey guys, just rebirthing this thread as I have some slow flashing indicators (turn signals) and hazards. They flash close to normal when the engine is revving higher but at idle they're far too slow. And they're getting slower...

I'm assuming a new relay will fix the issue but does anyone know how the new 2 wire (+ earth) relay can replace the original 3 wire (+ earth) relay?

 

[scrapdaddy]

No help here, but maybe get a hold of Coolerman in this thread, he is all things electrical.

 

[Pighead]

I'm assuming a new relay will fix the issue

More often than not, a slow or non-blinking turn signal is due to a poor ground, a loose or old bulb or the phases of the moon. Rarely, if ever, has it been the original relay

 

[PabloCruise]

Hey guys, just rebirthing this thread as I have some slow flashing indicators (turn signals) and hazards. They flash close to normal when the engine is revving higher but at idle they're far too slow. And they're getting slower...

I'm assuming a new relay will fix the issue but does anyone know how the new 2 wire (+ earth) relay can replace the original 3 wire (+ earth) relay?

View attachment 2896406

Could this be caused by lower voltage at idle?

 

[yelmarb]

Could this be caused by lower voltage at idle?

Indeed. I know think it’s an alternator issue.