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How to connect a wiring harness to your new car stereo

A look at Posi-Products Posi-Twist connectors

Robert Ferency-Viars is the managing editor for the Crutchfield car A/V learning content, and has been with the company since 1999. A Virginia native from the heart of the Blue Ridge Mountains, he loves spending time with his wonderful wife and sons, listening to music, writing, and playing games with friends. Robert's love for car audio began at 16 when he installed his first car stereo.

More from Robert Ferency-Viars

Posi-Product Posi-Twist connectors make car stereo installation a whole lot easier than soldering. Plus, they're more secure than old-fashioned electrical tape or crimping. How easy is it? Take a look at this short demo video to find out.

Video Transcript

Secure connections are important when you're connecting your Crutchfield wiring harness to your new receiver's harness. And that's why we always recommend Posi-Products connectors. Here's how they work. Strip the ends of the wires you'll be connecting, twist the wires together, slide the Posi-Product connector over the wires, and twist on the top to finish a solid, secure connection without tape or soldering. So order a pack of Posi-Product connectors before you start your installation.

  • Walter Elliott from Lanexa

    Posted on 8/25/2015 4:21:51 AM

    How well will they work in a marine application ( salt water environment )?

  • Alexander Hrabe from Crutchfield

    Posted on 8/25/2015 9:51:26 AM

    Walter, as long as you use marine-grade wiring, they should work as advertised.

  • Edwin McGuire from Mc Dowell

    Posted on 9/11/2015 3:46:23 PM

    Why not use regular color coded wire nuts (gray, blue, orange, etc..), then you don't even have to pre twist the wires ? Could save you maybe 1 or 2 steps.

  • Fred from Oklahoma City

    Posted on 2/28/2016 9:05:46 AM

    These don't look any better than butt connections. Possibly less secure and a lot more expensive. Where's the advantage?

  • Alexander Hrabe from Crutchfield

    Posted on 2/29/2016 10:48:37 AM

    Fred, this'll just come down to preference. Given the choice, I'd opt for Posi-Twist connectors every time. I've used them for several stereo installations and found them very secure and really easy to use.

  • James J McGrath from Allentown

    Posted on 4/3/2016 5:36:57 PM

    I still prefer soldering with shrink insulators. Now THAT'S secure.

  • James Rutledge from Little River Academy

    Posted on 12/2/2016 4:19:50 PM

    W when I cut the wires at the harness, what color goes where, I can't find the schematic, 05 GMC Yukon XL

  • Alexander Hrabe from Crutchfield

    Posted on 12/5/2016 12:59:40 PM

    James, you won't need to cut the factory harness if you use an aftermarket harness to connect your new stereo. You can use our vehicle selector to find what you need, or just give us a call.

  • Doug from Orchard Park

    Posted on 2/20/2017 9:53:34 AM

    I doubt these are approved by ABYC for Marine use... Have you submitted them?

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