Unleash the Full Potential of Your Ride
Unleash your ride’s full potential with custom car audio, lighting, and interior upgrades built for performance and style.
Experience next-level craftsmanship with clean installs that deliver power, precision, and a personalized touch.
Exclusive Services
From clean wire management to full custom installations, we handle all your vehicle's electrical needs with precision. Whether you're adding lighting, powering up accessories, or integrating complex systems, our team ensures safe, reliable, and professional-grade wiring every time.
Services include:
12V accessory wiring
Lighting installations (interior & exterior)
Fuse panel & relay setups
Power distribution
Troubleshooting & repairs
Custom harness fabrication
Whether you're looking for a simple stereo upgrade or a full custom sound system, we deliver high-quality audio installs tailored to your ride. We specialize in clean setups, tuned for clarity, depth, and power — no rattles, no shortcuts. Just pure sound.
Services include:
Head unit and stereo installs
Amplifier and subwoofer setups
Speaker upgrades (OEM or custom)
Sound deadening & tuning
Custom enclosures & fabrication
Bluetooth & smart integration
From concept to final detail, we specialize in transforming interiors with custom-built components and premium finishes. Whether you're looking to wrap panels, fabricate a custom dash or center console, or refresh your flooring and headliner — we build interiors that are both functional and clean.
Services include:
Panel wrapping & trim customization
Custom dash and center console fabrication
Carpet flooring installs
Headliner replacement or upgrades
Integrated mounting for audio, switches, or gauges
Clean finishing and material matching
Schedule today
Ready to upgrade your ride? Whether you need a full audio system, custom upholstery, 12V lighting, or accessories installed, we’ve got you covered. At Voltage & Stitch Designs, we take pride in doing it right the first time—with clean installs, honest service, and attention to detail.
Book your spot today and let’s start building something custom.
👉 Fill out the form below or give us a call to schedule your consultation.
Your vision. Our craftsmanship. Let’s make it happen.
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our story
At Voltage & Stitch Designs, everything starts with experience and a passion for precision.
Greg, our lead technician and co-founder, brings over 25 years of hands-on experience in the car audio and custom interior world. Having worked in some of Southern California’s most respected stereo shops, he’s built a reputation for clean installs, innovative fabrication, and delivering top-tier results that stand the test of time.
His deep knowledge of sound system design, custom upholstery, and 12V electrical work has shaped the foundation of our shop. Whether it’s installing a stealth sound setup, reworking a full interior, or wiring up custom lighting, Greg’s approach is simple: do it once, do it right.
Based in Upland, CA, Voltage & Stitch Designs specializes in car audio, upholstery, lighting, and accessories for clients who want more than factory. We blend craftsmanship with creativity—turning ordinary rides into something personal and unique.
We’re not here to rush jobs or cut corners. We’re here to build quality, earn trust, and make every vehicle look and sound like it should’ve come that way from the factory.
Voltage & Stitch Designs – Where custom meets quality.
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Interested in working together? Fill out some info and we will be in touch shortly. We can’t wait to hear from you!