New cluster issue for me...no lights or Gas gauge

Discussion in 'Technical' started by Hairy W Bush, Jul 5, 2024.

  1. Hairy W Bush

    Hairy W Bush Member

    Joined:
    Apr 1, 2011
    Messages:
    468
    Likes Received:
    20
    Trophy Points:
    63
    Location:
    Georgia
    Vehicle:
    1972 Maverick Grabber
    So I took care of my original issues with a new sending unit, new flasher, and even put a brand new printed circuit board and regulator on the back of the cluster. I grounded it like it should. The only lights that come up on the dash are my alternator light and the high beam indicator light. No other lights. Not even the gas gauge moves when powering the wire. The headlight switch in the dash seems fine, I replaced that with a new one years ago too.
    any help appreciated
     
  2. Krazy Comet

    Krazy Comet Tom

    Joined:
    Sep 13, 2012
    Messages:
    7,673
    Likes Received:
    2,407
    Trophy Points:
    531
    Garage:
    1
    Location:
    Chesapeake VA
    Vehicle:
    1972 Comet GT clone 306 . 1969 Fairlane Cobra 428CJ 1988 T-Bird awaiting 331 ..
    Is there power on the light blue & red wire? Can check at cluster, ashtray etc. If not, fuse is blown or rheostat in headlight switch isn't working.
     
  3. Hairy W Bush

    Hairy W Bush Member

    Joined:
    Apr 1, 2011
    Messages:
    468
    Likes Received:
    20
    Trophy Points:
    63
    Location:
    Georgia
    Vehicle:
    1972 Maverick Grabber
    Yes there is power coming through that wire. The rheostat appears to be working
     
  4. Craig Selvey

    Craig Selvey Indiana State Rep - MCCI

    Joined:
    Mar 9, 2002
    Messages:
    18,286
    Likes Received:
    1,353
    Trophy Points:
    878
    Location:
    Albany, Indiana
    Vehicle:
    1972 Maverick Grabber - Color: Orange Also, 1976 Ford Maverick 4-door, 1977 Mercury Comet 2-door.
    What year is your car/cluster? The new repop printed circuit board does not fit all years.
     
    TeeEl likes this.
  5. Hairy W Bush

    Hairy W Bush Member

    Joined:
    Apr 1, 2011
    Messages:
    468
    Likes Received:
    20
    Trophy Points:
    63
    Location:
    Georgia
    Vehicle:
    1972 Maverick Grabber
    1972 I mean everything seemed to match the old one, which was shot and separating everywhere
     
  6. TeeEl

    TeeEl Senior Member

    Joined:
    Oct 25, 2019
    Messages:
    825
    Likes Received:
    527
    Trophy Points:
    242
    Location:
    Colorado
    Vehicle:
    '73 Ford Maverick Resto-Mod
    I haven't installed my new circuit board yet. I hope I don't run into problems...
     
  7. Hairy W Bush

    Hairy W Bush Member

    Joined:
    Apr 1, 2011
    Messages:
    468
    Likes Received:
    20
    Trophy Points:
    63
    Location:
    Georgia
    Vehicle:
    1972 Maverick Grabber
    Found something tonight.. Looks like the contact tabs on the alternator light are broken off. Maybe this is the problem.
     

    Attached Files:

  8. Craig Selvey

    Craig Selvey Indiana State Rep - MCCI

    Joined:
    Mar 9, 2002
    Messages:
    18,286
    Likes Received:
    1,353
    Trophy Points:
    878
    Location:
    Albany, Indiana
    Vehicle:
    1972 Maverick Grabber - Color: Orange Also, 1976 Ford Maverick 4-door, 1977 Mercury Comet 2-door.
    That should not be the issue as I believe that socket does not need to make contact to the printed circuit board.....it is "wired" as you can see.

    I don't recall exactly what years the repop circuit board fits.
     
    Krazy Comet likes this.
  9. Krazy Comet

    Krazy Comet Tom

    Joined:
    Sep 13, 2012
    Messages:
    7,673
    Likes Received:
    2,407
    Trophy Points:
    531
    Garage:
    1
    Location:
    Chesapeake VA
    Vehicle:
    1972 Comet GT clone 306 . 1969 Fairlane Cobra 428CJ 1988 T-Bird awaiting 331 ..
    Autokcrafters lists their board as '70-'73. I've seen vendors that said '70-'77 but I'd be leery of that.

    The ALT light is independent of cluster.
     
    Craig Selvey and TeeEl like this.
  10. Hairy W Bush

    Hairy W Bush Member

    Joined:
    Apr 1, 2011
    Messages:
    468
    Likes Received:
    20
    Trophy Points:
    63
    Location:
    Georgia
    Vehicle:
    1972 Maverick Grabber
    Yes the board is for a 70-73 so I'm good there.
    I don't know guys. I tested the voltage regulator with a test light and 1 terminal is bright while the other is dim and I believe that to be correct.
    I checked power across the fuse for the '14A warning lamps' circuit and I am getting only 1V across the fuse.
    I doubt this matters but my emergency flashers are working, but I noticed that the driver rear light is the only one that does not. Bulb is good.
    What would the contacts from the idiot light be doing then if that has nothing to do with my issue?
     
  11. Craig Selvey

    Craig Selvey Indiana State Rep - MCCI

    Joined:
    Mar 9, 2002
    Messages:
    18,286
    Likes Received:
    1,353
    Trophy Points:
    878
    Location:
    Albany, Indiana
    Vehicle:
    1972 Maverick Grabber - Color: Orange Also, 1976 Ford Maverick 4-door, 1977 Mercury Comet 2-door.
    If you have no "dash" lights....does the heater controls bulb light up when the parking lights/headlights are on?
     
    Krazy Comet likes this.
  12. krelboyne

    krelboyne Remember

    Joined:
    Aug 1, 2006
    Messages:
    890
    Likes Received:
    83
    Trophy Points:
    115
    Location:
    Salem, Oregon
    Is your IVR (instrument cluster voltage regulator) plugged in and working? that powers the fuel gauge. I think it should be 5 volts?
     
  13. Hairy W Bush

    Hairy W Bush Member

    Joined:
    Apr 1, 2011
    Messages:
    468
    Likes Received:
    20
    Trophy Points:
    63
    Location:
    Georgia
    Vehicle:
    1972 Maverick Grabber
    don't ask me why but none of that is there anymore
    I didn't test volts but it powered a test light
     
  14. Craig Selvey

    Craig Selvey Indiana State Rep - MCCI

    Joined:
    Mar 9, 2002
    Messages:
    18,286
    Likes Received:
    1,353
    Trophy Points:
    878
    Location:
    Albany, Indiana
    Vehicle:
    1972 Maverick Grabber - Color: Orange Also, 1976 Ford Maverick 4-door, 1977 Mercury Comet 2-door.

    If your other instrument lights were not working, I would suspect you have a blown fuse.
     
  15. Hairy W Bush

    Hairy W Bush Member

    Joined:
    Apr 1, 2011
    Messages:
    468
    Likes Received:
    20
    Trophy Points:
    63
    Location:
    Georgia
    Vehicle:
    1972 Maverick Grabber
    Went out to the car again yesterday. The car had most of the old sockets and bulbs working outside of the cluster, until I put them in. Pulling out on the tabs didn't help. I bought new ones. Same damn deal. They locked in perfectly. I first started to pull one to swap and that's when I saw light. wtf? the contacts weren't quite as long as the old ones, but then again those didn't work once locked in either! All i did was either slightly turn out one, or flipped them around. Makes no sense. But I appear to have lights including my blinkers.
    What's supposed to go into the holes for the red lights? sockets or a specific wire like for the ALTERNATOR?
     

Share This Page