1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

dimming lights

Discussion in '80-Series Tech' started by thorvald, Aug 19, 2003.

  1. thorvald

    thorvald .......

    Messages:
    1,569
    Media:
    19
    Likes Received:
    23
    Joined:
    Aug 18, 2002
    Location:
    on the ice, wyoming
    ill be looking into this tomorrow, but thought maybe someone would have agood idea of what my problem is first. My lights are dimming on their own, sometimes when the gas is let off on, sometimes with nothing being done, no accessories being turned on or off. it was more of a flicker but tonight it
    was the difference between brights and dim. Havent noticed it happening with the brights on, its just with the dims, which gives very little light. The voltmeter is registering just barely above the middle mark when they dim, when they go back to normal it moves about a centimeter or so above the middle line, where it normally sits.
    Im thinking I need to check the altenator and battery, possibly a short somewhere, anything else I should be looking at?
     
  2. Hltoppr

    Hltoppr SILVER Star

    Messages:
    2,020
    Media:
    4
    Likes Received:
    3
    Joined:
    Aug 29, 2002
    Location:
    Port of Indecision...otherwise Northern Arizona
    My thoughts were bad alternator... get that checked first. It's very likely that the battery is barely holding on too.

    -H-
     
  3. landtank

    landtank SILVER Star

    Messages:
    18,422
    Likes Received:
    595
    Joined:
    Mar 27, 2003
    Location:
    Groveland MA
    Also could be a slipping belt to the altenator.
     
  4. scottm

    scottm

    Messages:
    3,140
    Media:
    8
    Likes Received:
    836
    Joined:
    Mar 27, 2003
    Location:
    Third Coast, USA
    My stock '97 has separate power feeds for left and right light headlight buckets, then separate grounds from each bulb through the headlight switch. If it's a short in the headlight wiring you should see it on one side or the other.