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Wiring For Boss to 1990 G.M.C

Discussion in 'Chevy Trucks' started by ArrowChucker, Oct 2, 2006.

  1. ArrowChucker

    ArrowChucker Junior Member
    from Canada
    Messages: 3

    :help: Hi.
    I am a new guy here I purchased a Boss plow 6 years old or so with wiring harness RT3 Straight Blade My question is on the left side there are 2 connectors 1 for headlights and the other is to plug into main harness of truck lights.I can't find where to plug into the main harness for my year of truck 1990 Sierra 4x4 ext cab 350. Am I to cut the connector off and tie into the lights wiring harness above the drivers fender? Any help would be great Thanks in advance.:)
     
  2. 06HD BOSS

    06HD BOSS 2000 Club Member
    Messages: 2,611

    I posted the same thing about 2 weeks ago. I was confused as hell like you and nobody answered! LOL you hafta go to your local BOSS dealer and tell them you need a set of headlight adapters to fit your truck and what those do is make everything just plug and play so you DO NOT need to splice! They run like $45 for the set.

    PS- and when you go to plug them in make sure you have them clipped in the right way. Theres an "A" & "B" side. i made a mistake of flipping them around and got myself even more confused when the lights didnt work HA
     
  3. ArrowChucker

    ArrowChucker Junior Member
    from Canada
    Messages: 3

    Thanks 06HD BOSS for the information. So I think I have it, :dizzy: on the wiring diagram the 2 A's are the lights(that need adapters from a Boss dealer) and the "B" is what plugs into the wiring harness at the light itself(Also need adapter)
     
  4. 06HD BOSS

    06HD BOSS 2000 Club Member
    Messages: 2,611

    Not exactly. By the A & B i mean on the adapters you have to get from boss...have an A & B side that get plugged into the factory headlight harness. Just read the instruction youll get it...i think im confusing things