
Mil-Spec Custom Wiring
Motorsport-Level Wiring. Built Clean. Built Tough. Built to Win.
At Richewerks, wiring isn’t an afterthought—it’s the foundation of performance. We specialize in motorsport-grade, mil-spec custom wiring harnesses for import and domestic vehicles, built with precision to handle everything from street duty to full-blown race abuse.
If you’ve ever dealt with electrical gremlins, unreliable grounds, or spaghetti-bay wiring nightmares, we’re here to end that for good.
The more power you make, the more critical clean, reliable wiring becomes. With today’s data-heavy tuning, CAN-bus systems, and smart ECUs, your vehicle’s brain needs a flawless connection to every system.
That’s why we build all wiring harnesses to mil-spec standards using the same methods trusted by aerospace, defense, and top-tier race teams.
No guesswork. No shortcuts. Just absolute reliability and professional execution.

If it can make power, we can make it better.
Custom Engine Harnesses
Chassis & Auxiliary Harnesses
Standalone ECU Integration
- MoTeC
- Haltech
- FuelTech
- Holley EFI
- AEM Infinity & EMS
- ECUMaster
- Hondata
- Link
- MegaSquirt
- Others
Tucked Engine Bays
- Tefzel wire – Heat-resistant, lightweight, aerospace-grade
- Raychem DR-25 heat shrink – Seals and protects your harness from elements
- Autosport & Deutsch connectors – Weatherproof, vibration-resistant, serviceable
- Loomed, labeled, and tested– Every wire is pinned, terminated, and tested before install
- Future-proof – Built to allow for system expansion and data logging
- Street builds running upgraded sensors or ECUs
- Track cars needing data logging, CAN setup, or quick-service harnesses
- Drag and drift builds with battery relocations, switch panels, and kill switches
- Race teams looking for bulletproof, plug-and-play solutions
- Tucked bay show cars wanting function + flawless aesthetics
The more power you make, the more critical clean, reliable wiring becomes. With today’s data-heavy tuning, CAN-bus systems, and smart ECUs, your vehicle’s brain needs a flawless connection to every system.
That’s why we build all wiring harnesses to mil-spec standards using the same methods trusted by aerospace, defense, and top-tier race teams.
No guesswork. No shortcuts. Just absolute reliability and professional execution.
Whether you’re wiring up a 1,000HP 2JZ or a track-prepped Coyote-swapped Mustang, we bring motorsport quality to every wire.
Our harnesses don’t just clean up your engine bay—they give your car the stability and performance it needs to run strong under extreme conditions.
📞 Contact Richewerks today to start your custom wiring project.
📍 Serving serious street builds, race teams, and pro-level shops across Southern California and beyond.
If it starts with a spark—it starts with us.
Let’s wire it right.