One headlight is real dim

Discussion in 'Trucks and Trailers' started by Killswitch, Aug 13, 2006.

  1. Killswitch

    Killswitch LawnSite Senior Member
    Posts: 438

    99 Dodge....has a meyer plow setup on it and the headlights are run through a changeover module.

    Worked fine...just noticed one light is 90% dim.....barely working. Replacement bulb does the same. Have cleaned and played with the connections and everythings nice and clean/greased as always.

    Any ideas?

    Bad ground? Bad changeover module?

    I hate electrical problems.


    I actually saw a truck going down the road the other night with the same symptom and problem...was a Ford.
  2. crash935

    crash935 LawnSite Member
    Posts: 20

    More than likely a bad ground on the ground wire coming from the module.
  3. Hansen1784

    Hansen1784 LawnSite Member
    from Renton
    Posts: 13

    Clean ground.
  4. Killswitch

    Killswitch LawnSite Senior Member
    Posts: 438

    lol....grrrrr. Ok.

    F'ing bad grounds.
  5. grass_cuttin_fool

    grass_cuttin_fool LawnSite Gold Member
    Posts: 3,503

    Yep i would start with a bad ground if It was mine

  6. Killswitch

    Killswitch LawnSite Senior Member
    Posts: 438

    Yeah well....update. So far I havent found any bad grounds. Im gonna swap change over mods....theres on each side. The one that the bad light runs through is a little dirty...minor last year and greased welll

    But Ill swap those and see what that tells me.

    Frankly Id rather spend the fifty it would cost to replace a module than fight a bad ground issue.

    Been there done that.
  7. Brendan Smith

    Brendan Smith LawnSite Bronze Member
    Posts: 1,196

    do you have a shop manual for the vehicle? if not, check your local library. many of them show ground loczations which will make it alot easier to find them all. good luck.

Share This Page