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Thread: Electrical Harness Replacement.

  1. #11
    Admins Never Retire Ron's Avatar
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    Quote Originally Posted by Bitsyncmaster View Post
    You would need to come up with a way to put stripes on the wire to make your own harness. I did a little looking into that and did not come up with anything. If you could stripe the wires, all you need are the basic 10 solid colors to stock.
    FWIW, this used to be a good place for striped wires HERE. I haven't used them in a long while...

  2. #12
    Mr. Pickles-mobile Shep's Avatar
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    Late to the party, but had this same experience myself, here's my take on it.

    DMCH sells NOS harnesses. That means that yes, the wires are as aged as the cars are. Generally speaking, if you're having electrical issues from bad wires, NOS isn't going to help any. Now, if you're simply missing a bunch, or a crime took place that damaged a lot (vandalism, theft, etc.) or perhaps a fire or two damaged some, there's still a good case for them. But ultimately, the question you should be asking yourself is this:

    Are you confident enough in correct assembly and hookup that you are willing to completely redo it? And are you willing to pay more to do it more properly?

    If so, then to be blunt, don't go DMCH. The connectors are mostly available still (even reproductions), but the bigger issue is the insulation. 80's wiring used some form of rubber compound in the insulation or something, whatever it was just didn't age well and it's nasty nowadays. Recently we're seeing lots of silicone-insulated wires. These are far better, rated the same, but retain their flexibility and don't succumb to the same "hey let's just chip off a bit of insulation in a spot you won't notice and cause a bunch of headaches for you" issues that 80's wiring has. From a cost perspective, it will be more expensive (full-car harnesses are purpose-built for a niche, I doubt you can get that much wire cheaply, even if you replaced correct coloring with colored heat-shrink tubing), you'll need to assemble every connector yourself, there's more work involved.

    It's completely worth it if you're fully capable and willing to pay the premium, but that's a personal choice and I can't guide you one way or the other on that. But again, you're mostly benefitting on 40 years of wiring advancements and still missing out on 40 years of connector advancements (nobody uses the kinds of connectors this car has, not since the IDE-to-SATA transition that removed the 4-pin power connectors), 40 years of good electrical practice (high-power fusebox by battery, low-power fusebox on interior, segregating parasitic draw from high current) and other areas of possible electrical improvements (who the hell was the intern that designed the taillight boards seriously? Even by 80's standards, they were electrically clueless, those trace widths speak for themselves). It's certainly a start, but it's another cat-and-mouse game of "how far do you go?" DMCH harnesses will get you 95% of the way there. The rest is adapting to your specific VIN most likely.

    That said, this part did catch my eye and I wanted to clarify something:

    Quote Originally Posted by DMCVegas View Post
    I'd also love to see about installing heater circuits on a set of convex mirrors as well. So that's why I ask if there are any revisions on the '83 wiring harness vs. my '81.
    The circuit for the heated mirror (a plug already exists in the door, it's the black/green one) is tied to if memory serves ACC, it might just be "key to ON" though, I need to check. That's how mine are wired, and I have the ones from, Tom in Poland's batch. Can't recommend them enough, but holy shit it took me THREE DAYS to fish the wires through from mirror to inside the door, even with the access panel on the mirror itself off! Probably needed to drill something somewhere, but it's just such an insanely tight squeeze on that pivoting arm that if you haven't already, and have time, fish wires through now and wait for later, you won't regret it.
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