Custom Offroad Wiring Harnesses Built for Your Vehicle
Fastline Wiring & Fabrication designs and builds custom wiring harnesses for offroad vehicles, race trucks, UTVs, Jeeps, prerunners, rock crawlers and custom automotive builds. From complete vehicle rewires to dedicated accessory harnesses, every system is built around the vehicle, components and electrical demands of the project.
Certified Wiring Expertise
We are trained and certified by HP Academy in practical wiring and harness construction, ensuring clean, reliable, and professional electrical systems for every build.
✓ Clean Wiring ✓ Reliable Harness Construction ✓ Professional Electrical Systems
What We Offer
- Complete custom wiring harnesses
- Race truck wiring
- UTV wiring
- Jeep wiring
- Dual battery systems
- Fuse and relay panels
- Troubleshooting and rewiring
- Wiring repair and cleanup
- Accessory wiring
- ECU and engine wiring
We Build Custom Wiring Harnesses For
- Offroad Race Trucks
- Prerunners
- Rock Crawlers
- UTVs
- Jeeps
- Overland Vehicles
- Automotive Shops
- Race Teams
- Custom Truck Builders
Why Choose Fastline Wiring & Fabrication
- Clean and organized wiring
- Professional motorsports wiring methods
- Built for offroad environments
- Reliable and easy to service
- Fast turnaround times
- Serving Arizona offroad community
Custom Wiring Harness FAQs
What is a custom wiring harness?
A custom wiring harness is a wiring system built specifically for your vehicle or project. It connects electrical components like lights, switches, batteries, relays, and accessories safely and cleanly.
Do you build wiring harnesses for off-road vehicles?
Yes, we specialize in wiring harnesses for off-road vehicles, race vehicles, UTVs, sand rails, rock crawlers, and custom builds.
Can you rewire my entire vehicle?
Yes, we specialize in off-road vehicles, race vehicles, custom builds, and project vehicles that need wiring, fabrication, or custom metal work.
Do you install switch panels and auxiliary lighting?
Yes, we install switch panels, light bars, rock lights, whips, air compressors, radios, GPS units, and other 12V accessories.
Do you build plug-and-play wiring harnesses?
Yes, we can build custom plug-and-play wiring harnesses to make installation simple and reliable.
How much does a custom wiring harness cost?
Pricing depends on the size of the project, number of circuits, and components. Contact us for a quote based on your project.
How long does it take to build a custom wiring harness?
Turnaround time depends on the complexity of the harness and the project. Contact us for current lead times.
Do you troubleshoot electrical problems?
Yes, we diagnose and repair electrical issues, wiring problems, shorts, and accessory wiring.
What vehicles do you work on?
We work on off-road vehicles, race vehicles, classic cars, trucks, UTVs, sand rails, and custom builds.
How do I get started?
Use the contact form and tell us about your project. We can help design and build the wiring system you need.
Do customers need to buy parts through Fastline?
No. Customers are welcome to provide their own switches, lights, panels, accessories, and electrical components for their build. Fastline Wiring & Fabrication guarantees the quality of the wiring installation itself, but cannot guarantee the performance or reliability of customer-supplied parts.
Contact Us
Need a custom wiring harness for your offroad vehicle or race build? Contact Fastline Wiring and Fabrication today to discuss your project.
480-269-7178 Get a Quote Send Photos
