"clicking" under the dash

Electrical and Ignition

  1. Pateras

    Pateras Well-Known Member

    Messages:
    233
    Likes Received:
    36
    Joined:
    Jan 2, 2014
    Location:
    SW Colorado
    Local Time:
    11:58 PM
    Hi guys,
    I've done some brief searching and didn't come up with anything, so if this is covered somewhere i apologize.

    Here's the problem; I pulled out the dash a couple weeks back to deal with the smoked Amp meter. I bypassed the ampmeter all together, put everything back like it was (seemingly) but as soon as i turned the key on, I started noticing an audible clicking under the dash, about every 2 seconds, even when it's not running. I didn't think much of it, thinking i would deal with it later. well, i drove the car later and realized that that clicking was coinciding with the car momentarily dying while driving down the road!

    So, i can hear the click, see the lights dim on the dash, and the car dies every 2-3 seconds while driving 40 miles an hour. Crazy I know. Sound familiar at all? Thanks in advance.
    :banghead:
     
  2. memike

    memike Super Moderator Staff Member FABO Gold Member

    Messages:
    48,899
    Likes Received:
    8925
    Joined:
    Jan 8, 2006
    Location:
    on the hill
    Local Time:
    12:58 AM
    Hmmmm I am puzzled :happy1:
     
    • Like Like x 1
    • momoparman

      momoparman MOISMYHOME

      Messages:
      3,147
      Likes Received:
      318
      Joined:
      May 31, 2008
      Location:
      M I Z Z O U
      Local Time:
      12:58 AM
      Get a wiring diagram at mymopar.com then go back and visit what you did. If it worked before then it should work again. Sounds like you mixed up some wires or messed up some wires.

      If your harness got hot when the amp gauge melted down then you may have wires in the harness that have insulation melted and they are touching each other.

      Yes, I have had this happen on a 68 cuda, and when it did the wipers came on without the switch on, the radio power and the dash lights also. WITH THE KEY OFF! Also it would start but not stay running.

      I un-taped the wiring harness where it had gone through the ammeter and low and behold several wires and the black hot lead had fused together causing the circuits to be fed hot all the time.

      If you got hot and melty then look there first.

      Good luck.
       
      • Like Like x 1
      • Pateras

        Pateras Well-Known Member

        Messages:
        233
        Likes Received:
        36
        Joined:
        Jan 2, 2014
        Location:
        SW Colorado
        Local Time:
        11:58 PM
        The only thing i didn't put back was a crappy home made wire (couldn't have been a ground) from the inside dash metal to the inside plastic bezel. WTF people??

        Must have been the same person that cut a massive hole in the dash bezel with a chainsaw for a crappy 70's digital clock that i found laying inside the wiring. wasn't even hooked up. People are unreal. I'll post pictures of this psychosis soon.
         
      • Pateras

        Pateras Well-Known Member

        Messages:
        233
        Likes Received:
        36
        Joined:
        Jan 2, 2014
        Location:
        SW Colorado
        Local Time:
        11:58 PM
        Exactly, thank you sir. I just ahven't had a couple hours to throw at the problem. I have wires touching somewhere, just wondered if anyone had heard of this. Thank you!
         
      • pishta

        pishta I know I'm right....

        Messages:
        13,912
        Likes Received:
        3616
        Joined:
        Oct 13, 2004
        Location:
        Tustin, CA
        Local Time:
        10:58 PM
        if its a regular click, sounds like maybe a thermal contactor, like a flasher pulling something to ground like the tach feed?
         
        • Like Like x 1
        • ir3333

          ir3333 Well-Known Member

          Messages:
          4,042
          Likes Received:
          707
          Joined:
          Jun 1, 2008
          Location:
          ontario,canada
          Local Time:
          12:58 AM
          mechanical voltage regulator?
           
          • Like Like x 1
          • RedFish

            RedFish Well-Known Member

            Messages:
            22,847
            Likes Received:
            1846
            Joined:
            Sep 5, 2007
            Local Time:
            12:58 AM
            So what car and inst' panel ? One part that does get unfused 12 volts from ignition switch ( some models ) and does have a open/closed thermal conduction... instrument voltage limiter.
             
            • Like Like x 1
            • Triple J

              Triple J Well-Known Member

              Messages:
              59
              Likes Received:
              2
              Joined:
              Oct 24, 2012
              Location:
              Surprise,AZ
              Local Time:
              10:58 PM
              In the mean time disconnect the battery while the car is parked in your garage, just in case
               
              • Like Like x 1
              • Pateras

                Pateras Well-Known Member

                Messages:
                233
                Likes Received:
                36
                Joined:
                Jan 2, 2014
                Location:
                SW Colorado
                Local Time:
                11:58 PM
                Sorry, 67 Cuda. Just installed elec VR, but the clicking was happening before i converted from Mech VR. I hadn't thought of the instrument voltage limiter, thanks. THe battery was disconnected immediately, last thing i want to walk into is my 3 year project in flames in my garage, ha!

                Thanks guys, all this helps.
                 
              • RedFish

                RedFish Well-Known Member

                Messages:
                22,847
                Likes Received:
                1846
                Joined:
                Sep 5, 2007
                Local Time:
                12:58 AM
                So did you completely amputate that mechanical limiter or only disable it ( bend the little thingy ) ?
                OOPS we may be talking about 2 different parts.
                 
              • Pateras

                Pateras Well-Known Member

                Messages:
                233
                Likes Received:
                36
                Joined:
                Jan 2, 2014
                Location:
                SW Colorado
                Local Time:
                11:58 PM
                Well, i had to move to a electric voltage regulator since i now have a dual field alternator. Great guys here helped me out with that as well. so removed it entirely, and installed an electric VR. Thanks.
                 
              • RedFish

                RedFish Well-Known Member

                Messages:
                22,847
                Likes Received:
                1846
                Joined:
                Sep 5, 2007
                Local Time:
                12:58 AM
                I C The instrument voltage limiter is inside the fuel gauge. This area could have been the original root of the problems. One of 3 studs on that gauge gets 12 volts. One has or had a plastic cap to cover it so it couldn't short to the wire in defrost duct tubing or anything else. The noise suppression cap is attached and covering another of the 3.
                 
              • mopar head

                mopar head Well-Known Member

                Messages:
                2,646
                Likes Received:
                360
                Joined:
                Oct 21, 2008
                Location:
                Right here, can`t you see me?
                Local Time:
                12:58 AM
                Maybe the PO wired the ign. circut through a relay? and now is being fed wrong?
                 
              • 67Dart273

                67Dart273 Well-Known Member

                Messages:
                39,031
                Likes Received:
                6716
                Joined:
                Oct 14, 2010
                Location:
                Idaho
                Local Time:
                10:58 PM
                Someone may have added a thermal circuit breaker?

                Try unplugging the headlight switch which has one built in

                Some short? in the 4x flasher or turn signals? Remove both flashers
                 
              • Pateras

                Pateras Well-Known Member

                Messages:
                233
                Likes Received:
                36
                Joined:
                Jan 2, 2014
                Location:
                SW Colorado
                Local Time:
                11:58 PM
                You guys ready for this?

                So I found some time saturday to tackle this issue. The clicking was still coming from underneath the dash, so before i yanked the entire dash out, i wanted to isolate where it came from. I crawled underneath and started poking around. I found that the sound was coming from the wiper switch! Weird to say the least. I then remembered that I finally hooked the wiper arm back up while the dash was out last time.
                Thinking the motor and arm were bound, and just needed aligned, i took the arm back off, well, the clicking sound immediately went away. even more weird, so i tried connecting it again, and saw sparks! WTF?! i grabbed my meter, and sure enough, the body of the wiper motor has 12v to ground. unreal. so when i connected the arm, it shorted to ground, causing some relay inside the wiper switch to open periodically.
                I've left it disconnected, and deal with it over the winter. just crazy.
                 
              • momoparman

                momoparman MOISMYHOME

                Messages:
                3,147
                Likes Received:
                318
                Joined:
                May 31, 2008
                Location:
                M I Z Z O U
                Local Time:
                12:58 AM
                l LOVES ME SOME WIRING ISSUES!

                NEVER A DULL MOMENT WHEN THERE IS ELECTRICITY INVOLVED. :D
                 
              • pishta

                pishta I know I'm right....

                Messages:
                13,912
                Likes Received:
                3616
                Joined:
                Oct 13, 2004
                Location:
                Tustin, CA
                Local Time:
                10:58 PM
                book it Dano! now we have another gremlin to keep aware of. Nice thing about boards the the internet in general is the huge searchability of it. This will save the next guy loads of beer drinking time.
                 
              • 67Dart273

                67Dart273 Well-Known Member

                Messages:
                39,031
                Likes Received:
                6716
                Joined:
                Oct 14, 2010
                Location:
                Idaho
                Local Time:
                10:58 PM
                On some cars the wiper switch, just like the headlight switch, has an internal breaker.
                 
              • HemiMark

                HemiMark Well-Known Member

                Messages:
                8,067
                Likes Received:
                450
                Joined:
                Jun 2, 2006
                Location:
                Pittsburgh PA
                Local Time:
                1:58 AM
                I thought it was the speedo cable not being clipped in all the way.
                 
              • RedFish

                RedFish Well-Known Member

                Messages:
                22,847
                Likes Received:
                1846
                Joined:
                Sep 5, 2007
                Local Time:
                12:58 AM
                OK You'll probably find the short circuit in the park switch just inside the gearbox cover. The thermal safety inside the 67 wiper switch is a strip of bi-metal. It will eventually crack in half. Then either replace entire switch or take the switch apart and route the safety out of the switch and attach a cycling circuit breaker on it outside.
                Went through all of this with our very first 67 notch. Variable 3 speed wipers.
                 
              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.