RPM Gauge not working

Discussion in 'Street/strip 400/430/455' started by hgiljr, Feb 23, 2018.

  1. hgiljr

    hgiljr Well-Known Member

    Hello everyone. Ever since I bought the car 67 GS, the RPM gauge has never worked. It does light up, but that's about it. Where do I start looking to see what could be wrong? Thanks
     
    hgiljr, Feb 23, 2018
    #1
  2. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    Make sure it is connected to the negative side of the coil first. If you have an MSD box, there is a tachometer output. If the connections are right, then the tachometer is at fault.
     
    LARRY70GS, Feb 23, 2018
    #2
  3. Doug's Stage X

    Doug's Stage X Well-Known Member

    Like Larry said and also if this is all msd ignition you may need their tach adapter. I know I did
     
    Doug's Stage X, Feb 25, 2018
    #3
  4. sean Buick 76

    sean Buick 76 Buick Nut

    Mine doesn’t work either... I just rev it to 8000
     
    sean Buick 76, Feb 25, 2018
    #4
    Harlockssx likes this.
  5. hgiljr

    hgiljr Well-Known Member

    Hi all. I do have an HEI distributor coil setup, not sure of brand though. I checked and I have a brown cable connected to tachometer plug on dtributor. I will look into tach adapter and see if that's the issue. Also will make sure cable is properly connected to back of tach. Thanks for feedback
     
    hgiljr, Feb 26, 2018
    #5

Share This Page