Blinkers and Hazzards

Electrical and Ignition

  1. Markzilla88

    Markzilla88 Well-Known Member

    Messages:
    82
    Likes Received:
    18
    Joined:
    Oct 4, 2019
    Location:
    Maryland
    Local Time:
    4:21 AM
    I was looking for ideas on what could be causing my troubles.
    My blinkers work fine, but my hazards when activated flash bright, but stay bright and wont flash. Ive tried different types of flasher units, LED and regular bulbs, however I cant seem to get them to work. Ive looked in the service manual but havent found the right answer and fix.
    Again, just looking for ideas and things to try. Thanks!
     
  2. toolmanmike

    toolmanmike FABO MODERATOR Staff Member FABO Gold Member

    Messages:
    58,697
    Likes Received:
    46108
    Joined:
    Jan 18, 2006
    Location:
    Iowa
    Local Time:
    3:21 AM
    Probably the combination of incandescent and led bulbs is not compatible with your hazard flasher. (different flasher than the one for your turn signals)
     
    • Agree Agree x 1
    • Markzilla88

      Markzilla88 Well-Known Member

      Messages:
      82
      Likes Received:
      18
      Joined:
      Oct 4, 2019
      Location:
      Maryland
      Local Time:
      4:21 AM
      So I do have LED tail lights in there, however the front bulbs are incandescent. My blinkers suffered from hyper flash while using a traditional flasher unit. I swapped both flasher units (blinkers and hazards) to LED flasher units. The blinkers work as they should now, and no longer suffer from hyper flash, but again, the hazards just stay illuminated solid and wont flash.
       
    • 67Dart273

      67Dart273 FABO Gold Member FABO Gold Member

      Messages:
      48,292
      Likes Received:
      16327
      Joined:
      Oct 14, 2010
      Location:
      Idaho
      Local Time:
      1:21 AM
      First find out if the system works. Get standard bulbs in there and make sure everything works right. This will show the sockets, wiring, connections and TS switch all work. Then deal with LEDs Some LEDs are different and a PITA. Some require special flashers. There is so much China garbage out there there is no way to really advise you on this.

      Someone needs to, or maybe they have, come up with a good electronic flasher that is independent of load

      Also TELL US WHAT YOU ARE WORKING ON. Year make model

      Early A's used what amounts to an add on hazard system, 67-69 used a switch external to the TS switch, and all column ignition cars had the hazard switch built into the TS switch, so yeh, it DOES matter
       
      • Agree Agree x 1
      • Markzilla88

        Markzilla88 Well-Known Member

        Messages:
        82
        Likes Received:
        18
        Joined:
        Oct 4, 2019
        Location:
        Maryland
        Local Time:
        4:21 AM
        Okay Ill give that a shot swapping those bulbs back in there. It is a 1972 Dodge Demon.
         
      • Dubob

        Dubob Well-Known Member

        Messages:
        1,309
        Likes Received:
        543
        Joined:
        Oct 28, 2011
        Location:
        Ohio
        Local Time:
        4:21 AM
        I went LED tail lights with LED front park/turn signals on my 71. I used the digital flashers for both hazard and turn signals. What I found was the polarity of the wires at both flasher units Was incorrect. I de pinned the connectors and swapped the wires and everything worked perfect. I can’t say that’s your issue with the incandescent in front and LED in rear but it’s a shot.
         
      • Markzilla88

        Markzilla88 Well-Known Member

        Messages:
        82
        Likes Received:
        18
        Joined:
        Oct 4, 2019
        Location:
        Maryland
        Local Time:
        4:21 AM
        Yeah so one of my flasher units was reverse polarity so I made short little jumpers to swap them properly and the blinkers worked great afterwards
        The hazards still only flashed bright and stayed on
         
      • bc3j

        bc3j Member

        Messages:
        5
        Likes Received:
        0
        Joined:
        Feb 10, 2020
        Location:
        Cleveland, Ohio
        Local Time:
        4:21 AM
        I used a neutral polarity turn signal flasher. Didn’t need to flip the wiring. Direct plug-in. My OEM hazard flasher still worked, but at a slower rate and I left it alone.
         
      • 67Dart273

        67Dart273 FABO Gold Member FABO Gold Member

        Messages:
        48,292
        Likes Received:
        16327
        Joined:
        Oct 14, 2010
        Location:
        Idaho
        Local Time:
        1:21 AM
        No flasher unit should be reversed polarity. This is a product of "chinese thinking." The thing is, the connector for the flasher is standardized..........they are either 2 or 3 terminal, and there is no reason every single one cannot be wired exactly the same.

        On the other hand it does not take long to re-pin those connector shells
         
      • TheGrateRonzini

        TheGrateRonzini FABO Gold Member FABO Gold Member

        Messages:
        928
        Likes Received:
        778
        Joined:
        Oct 25, 2017
        Location:
        Western New York
        Local Time:
        4:21 AM
        I just had to take apart and clean my flasher switch on my 67. Works great now, before was intermittent or constant. Whichever it wanted
         
      1. This site uses cookies to help personalize content, tailor your experience and to keep you logged in if you register.
        By continuing to use this site, you are consenting to our use of cookies.