No blinkers

[Derek 620]

I installed a new alternator. Change both relays. And I still have no blinkers.  My turn signal switch works to turn on the high beams. Anyone know what to look into?!

[IZRL]

As far as I know the turn signals usually have a fuse not a relay. Have you checked the fuses?

 

Make sure none of the turn signal bulbs are burned. Check front and rear. Replace them if they're bad. 

 

If fuses and bulbs are good. Check the turn signal flasher.  Not sure about the 620s but most cars have a turn signal flasher under the dash on the driver's side. It's a small metal cylinder with 2 prongs on one side. They look like the one in the link below(this link is not the one for your car).  If this flasher goes out, your hazards and turn signals won't work. Use a test light and see if there is power going to this flasher. Turn the key to the on position, switch the turn signal on,  and touch each prong to see if there's power. If there's power reaching the flasher and nothing happens it might be bad. 

 

Do your hazards work?

 

 

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Edited February 8 by IZRL

[datzenmike]

If turn signals only work on one side, see below.

 

If the dash blinker lights dimly but does not flash this is likely either the front or a rear bulb on the turn side is blown. The flasher unit relies on a load of at least two bulbs to work.  

 

Try the 4 way flasher. It needs more bulbs but will flash 3 usually but slowly. The bulb that doesn't flash is either blown or the socket may be corroded.

 

Hope you didn't throw the old flashers away, they make good spares.

 

 

If both side fail to flash it's more complicated, let me know.

 

 

 

[IZRL]

4 minutes ago, datzenmike said:

 

Hope you didn't throw the old flashers away, they make good spares

Ha, flashers are relays my bad. So he already changed the flasher. 

[datzenmike]

Not.... really a relay I think. There is a set of points on a bi-metallic strip with a wire wound around it. The current flowing through the coil heats the bi-metallic strip and it bends, opening the points and turning it off. The bi-metallic strip relaxes as it cools and makes contact again and it repeats. Strictly speaking a relay uses a magnetic field to make or break contacts and there is no way to make it repeat this like a flasher.

 

There are electronic flashers that are not load dependent and flash constantly no matter the number of bulbs.