Description
Overview
The FASS Fuel Systems WH-1006-3R Fuel System Wiring Harness is a heavy-duty electrical kit engineered to keep your FASS fuel system running at full voltage. Proper wiring is crucial to the performance and longevity of any diesel lift pump, and factory-style OE wiring is often prone to voltage drop-off that can rob your pump of the current it needs. This dedicated FASS wiring harness solves that problem by delivering clean, consistent power straight to your fuel system.
Sold as a complete kit, the WH-1006-3R comes ready to install with everything required to hardwire your pump the right way. It’s designed specifically to support the demands of high-performance FASS fuel systems, ensuring your investment in fuel delivery is backed by reliable, purpose-built electrical support.
Key Benefits
Voltage matters. When your FASS pump receives the correct current, it runs cooler, primes faster, and maintains consistent fuel pressure under load. This heavy-duty replacement harness includes an integrated relay to manage the electrical draw and prevent the current drop-off commonly seen with original equipment wiring. The result is stronger, more dependable pump performance and improved longevity for your entire fuel system.
- Manufacturer’s Part Number: WH-1006-3R
- Relay included for proper current management
- Wire and wire connectors included for a complete installation
- Heavy-duty replacement designed to prevent voltage drop-off
- Sold as a complete kit, individually
- Circuit breaker not included
What’s in the Kit
Every WH-1006-3R kit is built around the essentials for a clean, correct install. You get the wiring, the wire connectors, and a relay all in one package, so there’s no guesswork about which components you need to feed your pump full voltage from the electrical source. Because it’s sold individually as a kit, you receive a single, complete harness assembly ready to wire into your setup.
Fitment
This wiring harness is designed for Truck/SUV applications and is used with fully adjustable FASS fuel systems, including the Titanium Signature Series, Industrial Series, and Competition Series pumps. If you’re running one of these adjustable FASS systems, the WH-1006-3R is the harness built to match. Always confirm your specific FASS fuel system model before ordering to ensure the correct match for your application.
For diesel owners who take fuel delivery seriously, upgrading to a purpose-built FASS wiring harness is a smart, straightforward way to protect pump performance and reliability. Give your FASS fuel system the voltage it was designed to run on with the WH-1006-3R.






