'76 Blinker help (1 Viewer)

[FJmaine]

Need help! My blinkers stopped working. I can hear the switch activating, but none of my blinkers work anymore and my front parking lights are not working either, but my headlights work. Turn indicators in my cluster are not working now either. Same thing with my hazards- I can hear the switch, but nothing lights up. I checked my fuse and it is working. Its on the same circuit as my wipers and they work as expected.

The only thing I have done differently recently was I pressure washed my engine bay. Any ideas what would be causing this issue?

All LED lights and newer blinker switch.

 

[charliemeyer007]

Hear the switch click on/off as you move it or hear the flasher can clicking on/off/on/off...?

 

[FJmaine]

Hear the switch click on/off as you move it or hear the flasher can clicking on/off/on/off...?

I hear the flasher relay switching/ clicking, whether I use the turn signal switch or the hazard switch

 

[charliemeyer007]

Usually the "cans" will only click if there is a circuit - so I'm thinking you have some sort of ground short that lets the can think there is a circuit. Take all the electrical plugs apart. Inspect to see both sides have clean good fitting connectors. Look at the wire outside the plug to make sure there is no corrosion at the crimp. Use a q-tip to apply a little di-electric grease to the connectors and plug them back in.

If cleaning all the connectors doesn't work, then its VOM time

 

[Pighead]

Traditionally, blinker problems are usually ground problems. Lots of people run a dedicated ground wire from the blinker housing to a good ground.
I have limited experience with LEDs but figure it could be any wire to them that got wet, corroded or knocked loose. Especially after a pressure wash

 

[pb4ugo]

It could be a couple things, as mentioned grounds are a good start, or with LED's it could be the wrong flasher. The flasher needs to see some resistance to operate and LED's don't generate a lot of resistance. Stk 40 flashers wont work, they are mechanical, you would need to use some sort of electronic flasher.

 

[Rocky_LC]

I just went through that with LED Bulbs.

I ran saperate ground wires from the reflector in the pod, to the chassis. I also cleaned up every connector in the harness.

Incandescent bulbs are less succeptible to bad connections than LEDs.

Your flashers (clicking) may be working off the rear bulbs.

By the way… dielectric grease is an insulator, not a conductor. Don’t put it on areas where you want a good connection!

Rocky

 

[pb4ugo]

Your frt turn signals lights are grounded by the stud that bolts to the fender, the rears are grounded by the bolts that hold the fixture to the rear crossmember. There could be a lot of corrosion and rust at those connections. I would recommend adding a separate ground for each fixture. as @Rocky_LC mentioned and installed.

 

[45Dougal]

If none of them are working, but the relay is clicking, then it's a sign that they all became disconnected rather than a single ground wire breaking loose (that would just affect one turn signal, unless the relay wasn't able to cycle due to the reduced current - this isn't the case).

Also the dashboard turn lights are not working.

It's not a fuse issue, since the hazards run on a different fuse, and anyway the relay is clicking.
The common point of failure is usually the hazard warning switch connector, where all wires related to these circuits pass through - find it under the centre of the dash and clean it up.

failing that, look around the harness where it passes through the bulkhead and tighten up any connecters there. You may just have water inside one depending on the type of relay - check they're all dry.

If in doubt, test each turn signal with a wire jumped to the battery, or add a filament bulb test lamp to test continuity.

 

[FJmaine]

Update:
I ran too long with LED bulbs and a stock flasher relay. Got this from Amazon and I'm back in business.