PAINLESS WIRE HARNESS (thoughts)

M&H makes the harnesses and sells them thru year one. They are factory replacements with all the colors and proper connectors.
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Yea, that M&H from Year one is really, really nice!
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I can tell you two things from DIRECT experience with Painless Wiring products. First, they are not painless. Secondly, none of their products are Mopar specific. None have heavy enough wires going into the instrument cluster for the amp gauge circuit. Even if you plan on bypassing the amp gauge, the wire size is just not there in any of the Painless kits. I've always had to splice in heavier gauge wire to make it happen.
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My opinion, for what it is worth.
If you are using anything other than the factory style M&H harness, you will be wiring the car yourself, mostly from scratch. Not a terrible job if you are an electrical guy, or know your way around auto electrical systems. If you don’t it will likely be very difficult.

The OEM wiring in cars was designed for assembly line installation, so there are connectors everywhere. If you are wiring the car yourself with a universal harness, you don’t need all the connectors. You can just go from point to point. Simpler, but you have to figure it all out.

If you want plug and play, you need a copy of the OEM harness. M&H makes harnesses with popular upgrades, like electronic ignition and electronic voltage regulators.
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I want you to think carefully about what THEY said and what I am about to say. I used M&H harnesses when I restored my 69 Barracuda. They were incredible. Perfect fit; colors/stripes matched factory harness exactly; all connecters were perfect. Easy peasy lemon squeezy. I cannot tell you how many people have posted here with Painless harness problems. If you are a wiring expert, you might be OK. That Painless wiring harnesses you showed is NOT specific. It says UNIVERSAL! I highly suggest that you return it and get a year/make/model specific M&H harness. Because unless you are really good with wiring/rewiring a car, I would anticipate you'll have problems. Why pay that much for a harness that you know will not be an easy/exact fit.