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Finally Getting Taillight Wiring Done But What Is This?

Discussion in 'Early CJ-5 and CJ-6 Tech' started by mickeykelley, Oct 10, 2018.

  1. Oct 10, 2018
    mickeykelley

    mickeykelley Active Member

    Republic of Texas
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    Finally getting around to getting the cracked, incorrect tail lights and wiring done. At some point in its history, someone had run a single solid red wire from the headlight only circuit at the junction box under the hood all the way to the rear. My first thought was one of the factory wires must be broken. But the normal yellow wire for the running lights is working fine. So are the brake/turn wires. So does anyone have any idea why someone might run that wire?

    Next, in 58, were the taillight lenses glass or plastic? I got the repos from Walcks but the plastic lenses are already scratched. Cheap Chinese stuff. They had even painted the inside of the bulb socket. Took me awhile to figure out why it wasn't working. Obviously if you paint the inside of the socket, you get no ground. Idiots.
     
  2. Oct 10, 2018
    Glenn

    Glenn Kinda grumpy old man Staff Member Sponsor

    Apopka, Fl
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    Maybe the wire was for a work light? Wanted it on when the headlights were on? That's my guess.
     
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  3. Oct 10, 2018
    Keys5a

    Keys5a Sponsor Sponsor

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    Maybe the red wire was dedicated for lights for towing?
    -Donny
     
  4. Oct 11, 2018
    mickeykelley

    mickeykelley Active Member

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    Mystery to me. But being hooked to the headlight circuit, the only thing I can think of is like Glenn suggested, a work light. Willie had spent all his life on a ranch outside Kerville Texas. But it was a really bad wiring job.
     
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  5. Oct 11, 2018
    NCRenII

    NCRenII yellow fever Sponsor

    Far Nor Cal
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    I've seen similar circuits. Often used while driving at night to fight back following vehicles (too close or high beams).
    There would be a corresponding ground circuit broken by a toggle under the dash to fire off the death ray (often times a tractor light)..
     
  6. Oct 12, 2018
    Focker

    Focker Ran when parked... Runs while moving. Staff Member Sponsor

    Tri-Cities WA
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    Was it just hanging freely?
     
  7. Oct 12, 2018
    mickeykelley

    mickeykelley Active Member

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    Yes. But had been stripped and since was solid wire like thermostate wire, looked like it was attached to something. It had also been zip tied to the original wiring harness along the frame.
     
  8. Oct 12, 2018
    1960willyscj5

    1960willyscj5 Well-Known Member

    Mesa, Arizona
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    Homemade backup light?
     
  9. Oct 12, 2018
    Walt Couch

    Walt Couch sidehill Cordele, Ga. Sponsor

    cordele, Ga.
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    Remove it and be done with it. Not good to have solid wire in flexing looms.
     
  10. Oct 12, 2018
    mickeykelley

    mickeykelley Active Member

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    No switch any where just a straight run from headlight terminal under hood on the fender to the back. So if it was a rigged up backup light it would be on all the time the headlights were on, plus no sign of any attached lights or anything. Very strange.

    Yep that's the game plan now that I have made sure the taillights work like they supposed to.
     
  11. Oct 12, 2018
    NCRenII

    NCRenII yellow fever Sponsor

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    Separate switched ground...Light wouln not be on all the time, It could be fired off only if the headlights were on.
    i.e. could not be accidentally run during daylight hours unless headlights were on.
     
  12. Oct 12, 2018
    mickeykelley

    mickeykelley Active Member

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    Yep, but who know but at this point it's back to original, works so at some point I'll remove it.
     
  13. Oct 13, 2018
    NCRenII

    NCRenII yellow fever Sponsor

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    I'd recommend at least removing and cutting off the terminal at the j- box/lug.
    Can't be too difficult removing the 8' or so of unnecessary copper. (y)
     
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  14. Oct 13, 2018
    mickeykelley

    mickeykelley Active Member

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    I removed the wire today AND think I may have figured out what it was for. While bleeding the brakes, I saw the taillights were not coming on. I shorted the terminals and got lights so assumed it was the old switch. Turns out it takes a lot of pressure then they come on. I'm thinking the PO ran the wire to give him the option of pulling the light switch to force brake lights. Just a guess but make more sense to me now.
     
  15. Oct 13, 2018
    Focker

    Focker Ran when parked... Runs while moving. Staff Member Sponsor

    Tri-Cities WA
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    :shock:
     
  16. Oct 13, 2018
    NCRenII

    NCRenII yellow fever Sponsor

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    file this in the baling wire and duct tape section of forum to be lost forever. Hopefully...
     
  17. Oct 13, 2018
    heavychevy

    heavychevy Sponsor Sponsor

    Danielsville georgia
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    Phew, never know what those po's will do
     
    dozerjim likes this.

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