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Car indicator - How will I explain this one!!?

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    #32
    Pherekydes
    Registered Users Posts: 16,164 ✭✭✭✭Pherekydes


    Rovi wrote:
    The hazard relay is a seperate item to the flasher relay, and while it works in a similar way, it is much less sensitive to the load to which it's subjected.

    It'll operate at the same speed even if there's only one bulb conected, up to it's full rated load (much more than the usual 4 main bulbs, 2 side repeaters, and 2 dash lights), at which point it'll burn out.

    This is a safety feature, so that you'll still have some sort of recognisable flashing signal even if half the lamps are smashed off one end/side of the car.

    If the load is on the flasher, then the speed of the flashing would change depending on the wattage of the blown bulb, but it doesn't matter whether the bulb is a main one of a side repeater, the speed of flash is the same. Referring back to the link, when the flasher element is connected the bulbs are not, and vice versa. There is no load on the flasher.

    In modern cars, with the solid-state flashers, when a blown bulb is detected the circuit receives a signal that tells it to flash twice as fast (or whatever). When the hazards are on this detection element of the circuit is disabled.

    There wouldn't be any point in having two flashers to do what is essentially the same job.


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