Its called an indicator, not a trafficator (although this is only in the U.S and I'm not sure where your writing from). Anyway, the emergency flashers and the regular turn signal flashers are two different elements. You may need to replace the turn signal flasher usually located under the steering column against the front of the dash. However, it also could be anything from a loose wire which is only affected when moisture is around to a worn fuse. But the flasher is my bet.
2006-12-21 17:17:34
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answer #1
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answered by J. R 3
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Some lights don't have any sort of detectors. For example, in a large city, the traffic lights may simply operate on timers -- no matter what time of day it is, there is going to be a lot of traffic. In the suburbs and on country roads, however, detectors are common. They may detect when a car arrives at an intersection, when too many cars are stacked up at an intersection (to control the length of the light), or when cars have entered a turn lane (in order to activate the arrow light). There are all sorts of technologies for detecting cars -- everything from lasers to rubber hoses filled with air! By far the most common technique is the inductive loop. An inductive loop is simply a coil of wire embedded in the road's surface. To install the loop, they lay the asphalt and then come back and cut a groove in the asphalt with a saw. The wire is placed in the groove and sealed with a rubbery compound. You can often see these big rectangular loops cut in the pavement because the compound is obvious What you see here is a battery, a light bulb, a coil of wire around a piece of iron (yellow), and a switch. The coil of wire is an inductor. If you have read How Electromagnets Work, you will also recognize that the inductor is an electromagnet. If you were to take the inductor out of this circuit, then what you have is a normal flashlight. You close the switch and the bulb lights up. With the inductor in the circuit as shown, the behavior is completely different. The light bulb is a resistor (the resistance creates heat to make the filament in the bulb glow). The wire in the coil has much lower resistance (it's just wire), so what you would expect when you turn on the switch is for the bulb to glow very dimly. Most of the current should follow the low-resistance path through the loop. What happens instead is that when you close the switch, the bulb burns brightly and then gets dimmer. When you open the switch, the bulb burns very brightly and then quickly goes out. The reason for this strange behavior is the inductor. When current first starts flowing in the coil, the coil wants to build up a magnetic field. While the field is building, the coil inhibits the flow of current. Once the field is built, then current can flow normally through the wire. When the switch gets opened, the magnetic field around the coil keeps current flowing in the coil until the field collapses. This current keeps the bulb lit for a period of time even though the switch is open. The capacity of an inductor is controlled by two factors: The number of coils The material that the coils are wrapped around (the core) Putting iron in the core of an inductor gives it much more inductance than air or any other non-magnetic core would. There are devices that can measure the inductance of a coil, and the standard unit of measure is the henry. So... Let's say you take a coil of wire perhaps 5 feet in diameter, containing five or six loops of wire. You cut some grooves in a road and place the coil in the grooves. You attach an inductance meter to the coil and see what the inductance of the coil is. Now you park a car over the coil and check the inductance again. The inductance will be much larger because of the large steel object positioned in the loop's magnetic field. The car parked over the coil is acting like the core of the inductor, and its presence changes the inductance of the coil. A traffic light sensor uses the loop in that same way. It constantly tests the inductance of the loop in the road, and when the inductance rises, it knows there is a car waiting! it's amazing what you can do with google+copy & paste
2016-05-23 13:43:51
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answer #2
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answered by Heather 4
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That is likely to be an earth problem - caused by water getting into the rear lamp unit or the electrical connector between the lamp unit and the body.
This fault is common on 80s and 90s European Fords, less common on Fiats and Renaults, and occurs occasionally on other cars.
The first fix is to clean up the electrical contact to stop the current passing from one circuit to another and remove any corrosion. In the worst case you may have to buy a new bulbholder (or even a new lamp unit) if the corrosion is too bad, but if it has only started recently you should be OK The second fix is to prevent water getting back into the electric - you may need to buy a new seal for between the lamp housing and the body. If you're not confident fixing it yourself, any decent small independent garage will have seen the problem before and should be able to help.
Ignore the comment about the brake and indicator using the same bulb - this is the case in some American cars where the indicator is red, but is not the case in any cars sold in Europe as all our indicators must be amber to meet EC type approval standards.
2006-12-21 19:32:11
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answer #3
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answered by Neil 7
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Yes you have an earth that has stopped connecting so it uses the nearest passage to earth , you can either clean all the connections with some wet and dry , or as i do run a wire from the car body frame near the offending light and run it to the earth frame of the light , the reason i do it like that is because a bad earth has a nasty tendercy of continualy being a nuisance , my way cures it permantly
2006-12-21 19:40:54
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answer #4
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answered by ? 7
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turn signals ,brake lights and emergency flashers are all connected.since they all use the same bulb. your problem is the moisture, it gets into electrical and shorts out wires. you most likley dont have bad wires just a leak that needs to be found. i had a windsheild leaking and it got into the ignition and it acted as if the ignition was on untill i fixed the leak
2006-12-21 17:46:37
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answer #5
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answered by papabare 2
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This sounds like an earth fault to me and is easy to fix. Remove the offending light fixing and check the connection that goes to the car bodywork. I suspect that it will be corroded, clean up the connection and all should be fine. Whilst you are doing this, check earth terminal under bonnet/hood from battery to bodywork, this may be corroded as well.
2006-12-21 17:41:29
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answer #6
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answered by charterman 6
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I would think about a bad earth A bad earth can cause a lot of mysterious faults like that. also spray with W D 40
2006-12-22 07:02:43
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answer #7
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answered by Anonymous
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you have answerd your own queston?
when it is wet or damp!
this eather a short or open, exposed wires or boards.
you realy need to see an electricle enginer as this is proberbly quite hard to trase the fault.
sure you can reples switches or relays or fuses or what ever but you will never fix it, as the fault will all ways be there.
2006-12-21 17:36:06
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answer #8
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answered by witheringtonkeith 5
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You have a bad earth within the light cluster.
2006-12-22 05:23:54
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answer #9
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answered by Anonymous
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It's because it's italian and has crap electrics.
In all seriousness, check the grounds and the wiring to the indicator stalk.
2006-12-21 21:32:33
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answer #10
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answered by Anonymous
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