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It's possible that you got a bad flasher as a replacement. Just as a simple test, I'd swap the one from your turn signal location (under the passenger dash) with the emergency flasher on the fuse panel. If the turn signals still work and the emergency flashers don't, you'll have at least eliminated one possibility. If the problem flip-flops, you'll know you have a simple fix.
It looks like the turn signal flasher has a capacitor with it, and it doesn't look the same as the hazard flasher. Are they interchangable on the '79s?
Sorry, looking at your avatar pic I was thinking 77 for some reason. I don't know if the flashers are the same on a 79, though the capacitor unit is probably a noise suppressor for the radio.
The flashers ARE different. According to the service manual the turn signal flasher is a '2 lamp type' while the hazards flasher is a '4 lamp type'. Not much other detail is given. I would only THINK that the 2 lamp type wouldn't flash the 4 lite system, tho.
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