1. ann10

    ann10 New Member

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    Both of my blinkers blink really fast like if a light bulbs out but I’ve checked all of the lights and they’re all working. What could it be?
     
  2. Dodgeguy

    Dodgeguy Highway Star Member Relations Photo Winner! MOTM Winner! Public Safety

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    Well you checked what I would think it would be. Somebody may have an answer.
     
  3. TheOldGuy

    TheOldGuy Will Fabricate Anything For Space Shuttle Ride Site Supporter Level 3 MOTM Winner!

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    Look at the tail-lamps while the blinker is on. See if the tail-lamps are alternate flashing with the brake light lamps. In other words, alternating between dim and bright. Then come back here. I'll tell you how to fix it.

    -John
     
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  4. 69SatelliteSport

    69SatelliteSport Member

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    Make sure both your fog-lites are working!
     
  5. BAD GRANDPA

    BAD GRANDPA How fa$$$t do want to go? Site Supporter Level 5 Military Public Safety

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    If the previous owner replaced the OEM tail light bulbs (3057K) with LEDs and didn't wire in resistors, they will flash rapidly like you've described. Check to make sure your tail lights are bulbs and not LEDs. (Or you might be low on blinker fluid) :p..Oh yeh, Welcome to the Forum from Illinois! :cool:
     
  6. cudatude

    cudatude New Member Military

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    Could be the flasher relay or bad ground- - - - - -
     
  7. Shaker 392

    Shaker 392 Member

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    Hello and welcome to the brotherhood of muscle, go Bucks. As far your blinkers go have no clue, though maybe check all exterior lamps, ie license plate lamps.
     
    Last edited: Nov 11, 2017
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  8. TheOldGuy

    TheOldGuy Will Fabricate Anything For Space Shuttle Ride Site Supporter Level 3 MOTM Winner!

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    These cars have no flasher relay. The on-off of the blinkers is controlled by the PCM. The sound you hear is a small speaker under the dash to simulate a clicking relay.

    -John
     
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  9. ann10

    ann10 New Member

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    They alternate. I was hoping it was that so I could finally get fixed cause it’s annoying lol
     
  10. ThEoRy

    ThEoRy Member

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    Obligatory

    [​IMG]
     
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  11. TheOldGuy

    TheOldGuy Will Fabricate Anything For Space Shuttle Ride Site Supporter Level 3 MOTM Winner!

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    OK... Now that we know that they alternate between bright and dim, It's a problem with the ground bus on the tail lamps. I don't know your technical abilities, however I'll explain. The tail lamp bulbs as well as the front directional/parking lamp have a dual filament setup with a common ground. One of the filaments is heavier than the other and requires more current to drive it. This is the brake/directional side of the bulb. The skinny filament is for the tail lamp and parking lamp in the front. The directional assembly in the steering column is a complex circuit allowing the brake and directional to function together if the directional is operating on either side while the brake pedal is depressed. Otherwise, the brake lamp flashes to provide direction indication. OK, we got that.
    When the ground is at fault on the rear tail lamps, the current finds the least resistance path back through the directional circuitry causing the tail lamp filament to provide that path of least resistance. Suffice it to say that you need to investigate the tail lamp assemblies to see where the green wire that attaches to the body of the vehicle had come off, broken, removed by accident, corroded, used as a stereo ground, been monkeyed with, or some other reason. Lots of times, somebody will replace a tail-lamp bulb and accidentley break the wire and not fix it thinking it don't matter. Or.... somebody did some wiring in the trunk area for whatever reason and now you have the blinker problem.

    -John
     
  12. ann10

    ann10 New Member

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    Can I just take it somewhere so they can fix it? But where?
     
  13. ann10

    ann10 New Member

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  14. ann10

    ann10 New Member

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    imagine if I didn’t know any better and showed them this picture at autozone
     
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  15. BAD GRANDPA

    BAD GRANDPA How fa$$$t do want to go? Site Supporter Level 5 Military Public Safety

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    That's a tough one!...JMO: Call a few auto repair shops in your area (including a Dodge dealership). Ask what their hourly rate for trouble shooting electrical issues is. Most places charge a minimum of one hour just to get started (even if it takes them 5 minutes to fix your problem). From my experience, it could take 5 minutes :) or 5 days :(. A lot depends on the skills of the technician. Computer controlled electronics on these cars can be a real PITA, especially if the previous owner was messing with them. Hope your issue is corrected in the first hour. ;)
     
  16. jklotz10

    jklotz10 Well-Known Member Member Relations MOTM Winner!

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    ^^^^^^^^^^^This^^^^^^^^^^
    Check to see if you have any 'speed' shops in your area who specialize in Kustom rides. They are more apt to be able to deal with the electronic issues as they have probably done their share of swapping modern engines / transmissions with computers (ECM / TCM) into older cars. They most likely have the skills that would be lacking at say a Midas or CarX type of place.
     
  17. TheOldGuy

    TheOldGuy Will Fabricate Anything For Space Shuttle Ride Site Supporter Level 3 MOTM Winner!

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    Because the original poster has clearly identified the problem, This is NOT an issue with the PCM or other electronic device. Alternating dim-bright directionals is a simple issue of a missing ground. Any mechanic past the age of 50 has seen it a hundred times or more. When the ground is missing, the current path of the heavy brake/blinker filament now finds it's path to ground through the smaller tail lamp filament, through the headlamp switch and to ground. The increase in flasher speed is caused by the additional resistance/load of the longer path and the additional filament. I suggest the owner of said vehicle look around near the tail lamps in the trunk area as well as the ones mounted on the trunk lid to see if any wires look out of place. There is also the remote possibility that a front signal lamp may have lost its ground connection. Has anyone monkeyed around under the hood near the lamps which are adjacent to the regular headlamps? Has any work been done that corresponds to the time when the problem started? This could avoid an unnecessary expense.
    Even if you know nothing about cars, you may be able to identify the problem. You would also be surprised to see how many times over the years something heavy banging around in the trunk has torn off or loosened ground wires. Be a spy.

    -John
     

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