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  1. #1
    New Member
    Join Date
    Oct 2010
    Posts
    1
    Tractor
    1968 john deere 4020

    Default jd 4020 headlight switch wireing

    need to know if anyone has schematic for headlight switch (tractor is now 12 volt

  2. #2
    Elite Member JasG's Avatar
    Join Date
    Jan 2004
    Posts
    3,163
    Location
    CNY
    Tractor
    Kubota L3240

    Default Re: jd 4020 headlight switch wireing

    You should be able to find it at Deere.com or I picked one up at the local Deere dealer when I needed it to fix my friends 4020 light. I don't know where they are now, or I would scan and send.

  3. #3
    Super Member
    Join Date
    Feb 2008
    Posts
    9,213
    Location
    somewhere usa
    Tractor
    Deere 110tlb, 4520, x749, L130

    Default Re: jd 4020 headlight switch wireing

    If it were me I would rewire the lighting circuits on a machine with that much age. The wiring wasn't protected that well and new sleeving and wire would eliminate alot of future problems with it. At the least I would go over the wiring with a fine tooth comb looking for abrasions and cracks. This is a low cost problem solver imo.

  4. #4
    Gold Member
    Join Date
    Jun 2006
    Posts
    332
    Location
    Texas
    Tractor
    Massey Ferguson 2135

    Default Re: jd 4020 headlight switch wireing

    What year? Was it originally a 24 volt system?

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