Anyone done an engine-side wire harness? How difficult?

Electrical and Ignition

  1. MRGTX

    MRGTX Well-Known Member

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    ive had an intermittent electrical gremlin where my Dart won't get spark and won't start. Last time, there was a dead connector in the big plastic connector in the passenger side of the fire wall, solved by jumping the wire...I think.

    ...the under-hood wires are pretty brittle/grimy looking in general and I think it's time to investigate a new harness.

    How bad is this job? What are the hardest parts?

    Also, the harness is pretty expensive, correct? Any insights are welcome!!

    As you can tell, I'm in the dark here. :)
     
  2. MrJLR

    MrJLR Built, not bought FABO Gold Member

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    The harness is about $150....yearone
    I'm about to plug mine in today or tomorrow. ...in a 'Cuda

    Pretty hard to screw it up...but I'm sure I'll be here asking at least a couple questions!

    I think the "hardest" part will be connecting the wires to the starter...past my headers, upside down on my back...ugh. Whatever, it's gotta be done!

    Jeff
     
  3. 318willrun

    318willrun Utube channel 318willrun

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    ALRIGHT!!!!!!!!!!!!! YOU DIDN'T CUT ME ANY SLACK ON MY PROJECT!!!!! LET's Get That Thing Running Already!!!!!!!!!!!! These are YOUR words to me... "Weekend is here, time to get back at it"..... lol
    :thumbsup:
     
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    • MrJLR

      MrJLR Built, not bought FABO Gold Member

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      Heading to the garage right now!

      This weekend is some final details under the hood, the wiring harness and then replacing the gas tank!

      Might be breaking in the cam next weekend!

      Jeff
       
    • KosmicKuda

      KosmicKuda FABO Gold Member FABO Gold Member

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      Check with Evans Wiring. Family business. They will also customize a new loom to what you want. For instance, if you are converting to a Mopar Electrunic Ignition they will incrude the appropriate plug.
       
    • barbee6043

      barbee6043 barbee 6043 FABO Gold Member

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      yes they have been in business for decades, the GO TO people for harness. screw Year One. just me.
       
    • krazykuda

      krazykuda Well-Known Member FABO Gold Member How-To Section Editor

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      Out of context, that has new meaning.... :D
       
    • RedFish

      RedFish Well-Known Member

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      What year model makes a difference too. Late model engine harnesses are more cluttered with inline connectors that cause problems and wires going to crap that you don't need unless you need to pass emissions tests.
       
    • 67Dart273

      67Dart273 FABO Gold Member FABO Gold Member

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      You CAN rebuild them if you take your time and dedicate.

      The common terminals like the bulkhead connector, and windhield washer use what are called "Packard 56" terminals, which are available here and there. I got mine at clips and fasteners.

      Wire is available from several sources, one is "Del City" (No it has nothing to do with me, LOL)

      The challenge are the "odd" connectors such as the temp connector

      The big white plastic engine connector needs to be eliminated. That was a real bad "engineering" idea.

      Unplug the harness, lay it out on a bench / board, and nail it down and tag / mark the "break outs" of the different wires. Unwrap the harness and tie it at the breakouts so you can match them.

      Then you can simply do a "wire by wire" duplication. You can ALSO eliminate 'stuff' you might not need, IE you converted ignition, or went to a "one wire" alternator, whatever. Smog stuff, etc.

      You ALSO might consider at this time making mods to add a relay, triggered by the key, to operate underhood ignition loads. Low ignition / VR voltage is the number one reason for overvoltage in these girls

      And read the MAD article to decide what to do with your wiring around the ammeter/ bulkhead.
       
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