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1972 Cj5 Instrument Cluster Wiring

Discussion in 'Intermediate CJ-5/6/7/8' started by Dale Park, Apr 19, 2021.

  1. Apr 19, 2021
    Dale Park

    Dale Park New Member

    Utah
    Joined:
    Feb 15, 2021
    Messages:
    22
    I am almost done installing the Painless Wiring and on the Instrument Panel section there is not a wire for the Alternator Indicator Bulb/light. It is a 2 wire socket.

    Picture attached below

    I put 1 wire (Yellow shown on picture from bulb socket(center wire)to the "I" terminal that is hot with ignition, but I cannot figure out where the other wire (Red in the picture connection comes out of base of socket) connects to. Yes, I did read the TSM and it says it connects to "Alternator (AUX Term) to Inst Volt Reg to Inst Charge Ind"

    Any help appreciated so I can finish this up. Thanks
     

    Attached Files:

  2. Apr 19, 2021
    Walt Couch

    Walt Couch sidehill Cordele, Ga. 2021 Sponsor 2020 Sponsor

    cordele, Ga.
    Joined:
    Mar 29, 2007
    Messages:
    5,707
    What alternator do you have installed? Motorola/FordMoCo/Delco? Send picture of back of alternator and regulator if one is used.
     
  3. Apr 19, 2021
    Dale Park

    Dale Park New Member

    Utah
    Joined:
    Feb 15, 2021
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    22
    Alternator and Regulator should be factory. Alt is already installed so hard to take a full back picture. Picture of Alt and Regulator attached.
     

    Attached Files:

  4. Apr 19, 2021
    Dale Park

    Dale Park New Member

    Utah
    Joined:
    Feb 15, 2021
    Messages:
    22
    Just a few minutes after I posted this, Painless support emailed me back with the following:

    "The correct way to connect it would be to route the white wire (#914) that is in the Engine Section to the gauge cluster. Use the #914 as the ignition feed to the indicator. The run the cut off portion of the #914 wire from the charge ind. out to the alternator. If you already have an switched ignition 12v source connected to one side of the light, you need to route another wire from the light to the alternator. This would mean you have no need for the white #914 wire in the engine section."

    So I guess I will use the #914 wire from the Engine Section wiring to the alternator, then hook the other end up to the Alt indicator bulb wire on the cluster. Won't be too hard as the #914 wire originates inside the firewall at the new fuse block, so just need to run it a few feet to get to the cluster. Sound right?
     
  5. Apr 19, 2021
    Walt Couch

    Walt Couch sidehill Cordele, Ga. 2021 Sponsor 2020 Sponsor

    cordele, Ga.
    Joined:
    Mar 29, 2007
    Messages:
    5,707
    Yes. The wire to alternator AUX terminal goes to one wire on the indicator light and the other indicator light wire will be fine on the I terminal of the fuel gauge. The AUX terminal will have another wire from it going to the regulator. Originally these were grey.
     
  6. Apr 19, 2021
    Dale Park

    Dale Park New Member

    Utah
    Joined:
    Feb 15, 2021
    Messages:
    22
    Thanks for the info
     
  7. Apr 19, 2021
    Mr Vaughan

    Mr Vaughan Fly by the seat of your pants

    Central City, NE
    Joined:
    Oct 20, 2020
    Messages:
    1,110
    quick tip: when you attach files, choose full image. very helpful to the rest of us.
     

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