Car Wiring & Accessories

Build it right from the ground up with 12 Volt Outlet's comprehensive selection of car wiring and audio accessories — everything you need for a clean, professional, and high-performance installation from power to signal.

Start with the foundation of any great car audio build. Shop amplifier installation kits that include power cable, ground cable, RCA cables, speaker wire, fuse holder, and hardware — everything in one box for a fast, clean install. Upgrade your charging system with Big 3 wiring kits that replace your factory ground, alternator, and battery cables with high-strand oxygen-free copper wire for maximum current flow and reduced electrical noise.

Run clean power throughout your build with power cable rolls and ground cable rolls available by the foot or by the spool — in 0 AWG, 1/0 AWG, 4 AWG, 8 AWG, and more. Pair with distribution blocks and fuse holders to split power cleanly to multiple amplifiers, and protect your system with ANL fuses, mini ANL fuses, ATC fuses, and inline fuse holders rated for any install.

Keep your signal clean and noise-free with premium RCA cables, twisted-pair signal cables, and shielded RCA interconnects from the best brands in the business. Complete your speaker wiring with speaker cable rolls and bulk speaker wire available in every gauge for component speakers, coaxials, and custom installs.

Finish your build with the details that matter — wire terminals, ring terminals, spade terminals, butt connectors, heat shrink tubing, wire looms, split conduit, cable ties, remote turn-on wire, bass knobs, and machined power inputs that give your install a show-quality finish.

We carry the most trusted wiring and accessory brands including Elite, AudioControl, Rockford Fosgate, DS18, Stinger, Metra, T-Spec, and many more — because a great system is only as good as the wiring behind it.

Free shipping on orders over $100. Shop car wiring and audio accessories at 12 Volt Outlet today — and build it the right way.