Question about 1999 Buick Century

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99 Buick Century Custom; Dash lights stopped working.

I cannot see my speedometer at night, cannot see what gear I am in day or night. All of the system lights light up just fine: low fuel, low washer fluid, change oil soon, Someone said it might be the dimmer switch. That is a $135.00 part. I was hoping it could be something simple and less expensive.

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  • 6 more comments 
  • ra7104nn Mar 12, 2009

    No, they do not. My car is set up so that any time I start my car the headlights are on day or night. The radio lights come on when I turn the ignition switch off.

  • ra7104nn Mar 12, 2009

    That is correct.

  • ra7104nn Mar 12, 2009

    Thanks, I'll check back tomorrow.

  • ra7104nn Mar 13, 2009

    No I do not.

  • ra7104nn Mar 14, 2009

    Please send the wiring diagram to me. Thanks

  • Anonymous Mar 14, 2009

    I can't see the odometer day or night or the gear selction PRNDL lights night or day. My speedometer works fine and is illuminated at night. I have read on later model Buicks that the odometer/gear selection module will have to be replaced. Is this correct?

  • ra7104nn Mar 15, 2009

    My email address is ra7104nn@aol.com

  • big dave 216 Apr 10, 2009

    I have the same problem need help on fixing this problem

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The problem is with a set of resistors on the back of the instrument cluster. If you remove the trim panel in front of the cluster, there are four screws holding the cluster in. Remove the four screws and remove the cluster. Unplug it from the wire harness and flip it over. Unclip the back black plastic cover. Pull the printed circuit board straight out. Now, flip the board over and look on the top right quadrant just to the left of the trip odometer button. You will see up to four small cylindrical resistors. There should be four, but the solder on these seems to give out and they fall off the board. How I fixed mine was to go to Radio Shack and get 4 1/2Watt 150Ohm resistors and solder them in place of the four lousy ones. Reading the old ones, they ran from 127Ohm, to 154Ohm. Checking on other posts, I have seen that they are supposed to be 125Ohm, but either way, the 150Ohm was the closest I could get and they worked perfectly.

Posted on Aug 26, 2010

  • ron hyden May 05, 2012

    my resistors were shot replaced them for 1.25 at radio shack in stall them later but mine were dust

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The lights on the dash that show which gear is engaged do not show but the dashboard lights up

Posted on Aug 21, 2009

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  • Master
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Do the lights on the radio light up when the headlights are on?

Posted on Mar 12, 2009

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  • Clint Smock
    Clint Smock Mar 12, 2009

    So at night you can't see the dash, radio buttons, and window switches?

  • Clint Smock
    Clint Smock Mar 12, 2009

    I'll look up the circuit and check, but the dimmer switch is possible. I'll post tomorrow.

  • Clint Smock
    Clint Smock Mar 13, 2009

    Do you own a test light?

  • Clint Smock
    Clint Smock Mar 14, 2009

    In order to test this you will need one, you can pick one up at a parts store for about 5 dollars. I can also send you a wiring diagram or walk you through the test procedure.

  • Clint Smock
    Clint Smock Mar 14, 2009

    What is your email address?

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