1. Welcome to 4Runners.com!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all 4Runner discussion topics
    • Transfer over your build thread from a different forum to this one
    • Communicate privately with other 4Runner owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

tail light circuit!! tail, dash, running, license plate lights all out.

Discussion in '2nd Gen 4Runners (1990-1995)' started by 93 4runner, Mar 3, 2016.

  1. Mar 3, 2016 at 12:06 PM
    #1
    93 4runner

    93 4runner [OP] New Member

    Joined:
    Mar 3, 2016
    Member:
    #1659
    Messages:
    1
    Gender:
    Male
    tail light circuit out! tail, dash, running, license plate lights all out. all other lights work.
    ive replaced fuses, relays, headlight switch!!!
    does anyone have a tail light circuit diagram? I printed something out, but something on it doesn't add up, so want to verify it's correct. thanks, r
     
  2. Jun 3, 2016 at 4:54 AM
    #2
    1990 SR5

    1990 SR5 New Member

    Joined:
    Jun 3, 2016
    Member:
    #2102
    Messages:
    18
    Gender:
    Male
    First Name:
    Morgan
    Vehicle:
    1990 Red 4runner
    many lights, sound system, engine swap
    make sure you have no shorts in your taillights then replace your dimmer switch in your dash. mine did the same and that fixed it.
     
    Kyle11863 likes this.
  3. Jun 4, 2016 at 1:05 AM
    #3
    Kyle11863

    Kyle11863 King of the BS

    Joined:
    Jul 28, 2015
    Member:
    #807
    Messages:
    202
    Gender:
    Male
    First Name:
    Kyle
    Big Bear California
    Vehicle:
    1990 Toyota 4Runner SR5 V6 5 Speed Manual
    Doug Thorley long tube headers and lots of mud
    I agree. Dimmer switch could very well be the cause
     
  4. Jun 9, 2016 at 1:30 AM
    #4
    1990 SR5

    1990 SR5 New Member

    Joined:
    Jun 3, 2016
    Member:
    #2102
    Messages:
    18
    Gender:
    Male
    First Name:
    Morgan
    Vehicle:
    1990 Red 4runner
    many lights, sound system, engine swap
    lol quite common, with the 2nd gen's anyways, for some stupid reason the dimmer switch for the interior dash lights and whatnot has an effect on the tail assemblies, however, I didnt buy brand new and had to buy 4 different dimmers before i found one that worked... before you do that, make sure if you have a trailer light setup that its been installed correctly... i had to delete mine and redo it because the way it was wired in created a rats nest of wires, and therefore shorted everything out, damn near burnt my truck to the ground... And to add to my answer to the original question, there are two fuses labled AM1 and AM2. make sure both are good, because if they aren't, AM1 could be burnt, but the truck will still run and some random things wont work (ie. power mirrors, daytime running lights, dash lights, cargo lights... the works.). You'd know if AM2 was burnt, lol no power to the truck WHATSOEVER!
     
To Top