1973 Turn signal indicator

pickman

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The green signal indicator either left or right only blinks once or twice then off. All the front and rear turn lights work well. When initially reinstalled the indicator would continue to blink but now I am daily driving I have developed this. Have replace the front bulbs with no effect.

Any suggestions?
 
I have the same issue!! And it is not resolved. Left or right blinker seems to get the same result, blinks once or twice on the dash gauge then stops. External blinkers work perfectly.
 
I also have the same issue haha. It only happens sometimes for me. More the left turn signal position than the right. I feel like if when if I flick the turn signal stalk a specific way it works!
 
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replace the flasher unit, or add extra resistance to each side wiring, as a test hook in an extra flasher bulb so you have three on one side, it would probably flash!
 
Emergency flashers work including the indicator, all bulbs are silver base and new. As the system worked properly when installed last winter wondering if the flasher unit needs an upgrade as suggested by bavbob?
 
I'd try an electrical contact anti-corrosion product on every bulb first.

I use Corrosion X, and put a drop or so on a Q-tip, then coat all of the areas in both the receptacle and the bulb where either + or - connection will be made. Once treated, with this, I've never had another problem with transfer of current from a receptacle to a bulb or any other contact surface (e.g. fuses, etc.). I have a friend who had an ocean going sailboat and a few years ago, at dusk, the light on the mast would not light (and he had no spare bulb). He climbed the mast, treated the bulb contacts with Corrosion X and put the bulb back. Within a few minutes, the bulb lit, and stayed lit whenever turned on for the next year or so.

Whenever I do anything with electrical contact surfaces on an older car (5-6 years or more from new), I follow the procedure above. It is a wonderful corrosion inhibitor. Corrosion Block seems to provide equivalent corrosion inhibition.

Gary
 
Exactly the same problem I had. Dash TS indicator lights did not work correctly but the outside lights front and rear did as did the 4 way flashers.

The fix posted by bavbob in post #6 fixed mine.

 
The suggested fix by bavbob had been recommended by other lighting experts.
https://www.amazon.com/dp/B000CL7DBG/?tag=2402507-20 (pin configuration CF13, 3-prong)

Uh, hang on. The fix that bavbob suggests in post #6 involves and electronic flasher. I fully endorse that suggestion; I too had the "indicator flashes once or twice while exterior bulbs work OK" syndrome, and an e-flasher solved it for me.

However, the link in post #13 leads to a part that Amazon describes as an "Electro-Mechanical Flasher" - not an electronic one. While a new mechanical flasher would probably work OK, if I were going to the trouble of swapping flashers, I'd splurge for an electronic one.

The post that bavbob references from 2002faq shows a NAPA EL-13. The NAPA website offers that part for about the same price as the mechanical flasher on Amazon: https://www.napaonline.com/en/p/NF_EL13
 
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Installed the EL13 in place of the stock blinker relay, and works perfect now. That stock relay was new in 2004, and had limited hours on it......
 
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