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The hazards come on when i turn either left or right signal switch.
Generally this is something caused by the flasher relay going bad. This is a small relay that allows the lights to flash based upon current flow and a resistor inside that causes them to flash. When this is faulty, this...
I have a 78' GMC c15 pickup and when i turn either left or right blinker the hazards cut on.
You need to replace the bulbs in the front as one of the bulbs are shorted internally to the other circuit inside bulb. If replacing bulbs do not work then look for a ground wire problem going to the switch...

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